五年级下册数学口算题_五年级下册数学口算题卡人教版

2025-01-05 10:18 - 立有生活网

五年级下册数学分数加减法口算题

0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54=1) 4/14+8/14=6/7

五年级下册数学口算题_五年级下册数学口算题卡人教版五年级下册数学口算题_五年级下册数学口算题卡人教版


五年级下册数学口算题_五年级下册数学口算题卡人教版


2) 7/10+2/10=9/10

3) 4/7-3/7=1/7

4) 3/14+7/14=5/7

5) 4/11+5/11=9/11

6) 4/15+2/15=2/5

7) 9/10-3/10=6/10

8) 7/13+5/13=12/13

9) 6/13+5/13=11/13

10) 2/8+3/8=5/8

11) 9/13-9/13=0

12) 9/13+3/13= 12/13

13) 11/12-4/12=7/12

14) 14/15-3/15=11/15

15) 1/13+11/13=12/13

16) 2/15-2/15=0

17) 7/12+3/12=5/6

18) 12/15-9/15=1/5

19) 1/8+2/8=3/8

20) 6/7-6/7= 0

22) 2/13+7/13=9/13

23) 1/11+8/11=9/11

24) 3/4-1/4= 1/2

25) 4/15+10/15=14/15

26) 12/14-4/14=4/7

27) 7/13+2/13=9/13

28) 8/13-1/13=7/13

29) 12/14-12/14=0

30) 12/13-6/13=6/13

31) 3/7+3/7=6/7

32) 7/9+1/9=8/9

33) 8/14+2/14=5/7

34) 10/13-8/13=2/13

35) 3/14-3/14=0

36) 1/5+3/5=4/5

37) 1/12+6/12=7/12

38) 5/9+3/9=8/9

39) 7/11-2/11=5/11

40) 12/15-4/15=8/15

41) 1/14+5/14=3/7

42) 7/12-2/12=5/12

43) 2/9+5/9=7/9

45) 6/13-6/13=0

46) 7/14+2/14=9/14

47) 4/8-1/8=3/8

48) 6/8-4/8=1/4

49) 3/7-1/7=2/7

50) 7/10-6/10=1/10

51) 2/14+7/14=9/14

52) 2/12+2/12=1/3

53) 2/14+12/14=1

54) 7/15-6/15=1/15

55) 5/11+3/11=8/11

56) 3/11+1/11=4/11

57) 7/15+8/15=1

58) 6/7-1/7=5/7

59) 7/9-6/9=1/9

60) 3/15+10/15=13/15

61) 5/15-5/15=0

62) 2/12+7/12=3/4

63) 4/8+4/8=1

64) 4/13-3/13=1/13

65) 1/15+10/15=11/15

66) 6/15+1/15=7/15

67) 8/14-6/14=1/7

68) 12/14+1/14=13/14

69) 11/15+2/15=13/15

70) 3/13-2/13=1/13

72) 4/14+5/14=9/14

73) 5/10-5/10=0

74) 6/14+1/14=1/2

75) 1/10+5/10=3/5

76) 8/10-4/10=2/5

77) 3/8+4/8=7/8

78) 2/7+5/7=1

79) 4/9-2/9=2/9

80) 4/12+3/12=7/123、甲、乙两列火车同时从两地相对开出,甲火车每小时行使80千米,乙火车每小时行使70千米,开出12小时后两车还相距110千米,两地相距有多少千米?

81) 5/8-2/8=3/8

82) 4/13+5/13=9/13

83) 5/14+3/14=8/14

84) 1/14-1/14=0

85) 5/14+7/14=6/7

86) 5/9-5/9=0

87) 7/15+4/15=11/15

88) 12/13-1/13=11/13

89) 5/13-2/13=3/13

90) 1/12+9/12=5/6

) 6/10-5/10=1/10

92) 4/9+4/9=8/9

93) 9/15-8/15=1/15

94) 7/14-6/14=1/14

95) 4/9+1/9=5/9

96) 2/15+3/15=1/3

97) 5/12-1/12=1/3

98) 2/10+4/10=3/5

99) 11/14-8/14=3/14

100) 3/8+1/8=1/2

五年级下册数学口算400题

2、一个长方体沙坑,长4米,宽2米,深0.5米,如果每立方米黄沙重1.4吨,这黄沙重多少吨?

/是除号,希望这些题目对你有帮助

10-5.4= 4÷20= 3.5×200= 1.5-0.06=

1.01x99= 420/35= 25x12= 135/0.5= 4/3+4/1= 5.2/1.3= 32.8+19= 5.2/1.3= 25+15= 47-17= 58+18= 19+28= 2/1x2= 13/1= 132= 0+110= 4/2= 60-60= 16+56= 0-310= 47-20= 49-29= 1.3-0.7= 2.6x0.4= 2400/30= 25-15= 34+14= 9+18= 1/1= 78-28= 12+24= 7+14= 1-0.98= 0.048+0.52= 5×400=

19.9+11.1= 187÷1000= 1+3.89=

0.081×10= 75÷10= 0.96÷0.8=

0.8×7= 1.5×7= 1.32×8=

0.7×8= 10.3×2= 5×0.6=

0.9×0.3= 3.5×0.2= 2.01×0=

10×0.05= 0.13×7= 0.21×100=

0.7×4= 0.05×4= 4×0.3=430-= 0.17+0.06= 1.02-0.09=

30×100= 0.92-0.2= 3.5+4.8=

3.5+2.4= 5+0.07= 1-0.61=

0.47+0.23= 0.25+0.75= 3.7+0.33=

0.51+0.33= 1-0.6= 8-4.6=

5.8-3.6= 0.52+0.4= 6.45+5.5=

4.5-1.3= 3.4-2.8= 9.53-1.53=

8.8-6.7= 10+0.08= 9.5-7.3=

7.2+0.8= 7.82+0.3= 8.8-6.7=

9.5-7.3= 1-0.95= 3.4-2.8=

0.96-0.35= 9.53-1.53= 0.25+0.75=

1.2-0.8= 0.83-0.5= 2.7+0

12.5×8= 2.3×4= 3.25×0=

0.4×50= 30×0.1= 2.6×3=

4.1×2= 0.35×0.2= 7.5×0.1=

2.5×2= 0.5×10= 0.6×8= 2.1×2=

2.8×10= 0.7×0.8= 0.04×20= 5.6+0.4=

4.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8=

6×3.4= 0.62-0.32= 1.4×0.5= 0.75×100=

0.02×0.5= 3.6×0.3= 6.3÷7= 5.6×100=

0.75÷0.25= 0.125×8= 4.8÷0.3= 0.86÷2=

0.56÷28= 0.36÷0.4= 0.64÷0.8= 0.7×9=

3.6÷24= 0.8×1.1= 7.2+12.8= 46.7-3.8=

12.8÷4= 5.2÷13= 12.5÷5= 1.64+4.1=

10÷20= 24÷15= 8.65×10= 0.35×0.6=

3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=

2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=

4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8=

0. 56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=

7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8=

1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=

0.22×102= 9.6÷0.8= 5×0.24= 4.5-0.05=

3.9÷0.13 16.5÷0.5= 5×0.12= 24×0.5=

4.8×0.5= 2.8+4.2= 0.84÷2.1= 5÷0.25=

7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=

0.56÷0.8= 7.4-2.8= 0.18÷0.2= 0.16÷8=

4.5×0.02= 8+7.2= 1.2×30= 0.012×0.2=

7.3×0.3= 0÷6= 3.6÷0.12= 7.8÷0.6=

2÷5= 4.5+5= 0.3÷0.6= 0.96÷0.2=

10.5×0.4= 7.3+0.27= 8×0.125= 0.54÷0.6=

0.61+0.39= 0.56÷28= 10÷20= 4.08÷0.4=

10-9.4= 0.8×0.11= 7.2+12.8= 5.6÷0.01=

2.3×100= 0.75×100= 0.108÷2= 10.8÷9=

7.8÷0.01= 5.4÷0.6= 3÷5= 7×0.62=

12÷0.5= 5.2×0.4= 12.2÷0.2= 5.6÷100=

0.41+3.7= 0.02×0.5= 7.2-0.8= 1.4×0.5=

84÷0.21= 0.75÷0.25= 2.5×16= 0.108÷2=

1.75+32.5= 16-5.07= 5.2÷13= 1.64÷41=

1.02×0.2= 0.26×0.3= 8.4×0.02= 1.2×6=

0.8×0.05= 12.6÷0.03= 8.71÷0.1= 21÷0.21=

0.8×0.13= 0.34÷17= 8.08÷0.4= 0.5×2.2=

1.24×4= 3.27+0.63= 5.02×0.3= 0.3×0.5=

5.6÷7= 72÷ 7.2= 0.7÷0.35= 0.7÷1.4

0.48÷0.04= 1.25÷2.5= 5.5+5.5= 16.8÷8=

0.54+2.2= 3.5-0.05= 2÷0.02= 0.25×40=

1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=

46.5+52.5= 0.45×102= 1.25×88= 2.64+3.85+1.54=

8×1.25= 7÷3.5= 4.2÷0.7÷6= 0.4×8.6×25=

0.27÷0.3= 2.5×101= 0.65×101-0.65= 2.6×7÷2.6×7=

0.02×0.5= 3.6×0.3= 6.3÷7= 5.6×100=

7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=

1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=

2.5×2= 0.5×10= 0.6×8= 2.1×2=

0.61+0.39= 0.56÷28= 10÷20= 4.08÷0.4=

1.2×0.3 = 6.6÷1.1 = 4.9÷7= 0÷0.48=

五年级下册数学口算题卡第17页和18页怎么做

1.45五分之一-九分之一=四十五分之四+15×6= 135

2.÷5×8=400

3.6×5÷2×4=60

4.30×3+8=98

5.400÷4+20×5= 200

6.10+12÷3+20=34

7.(80÷20+80)÷4=21

8.70+(100-10×5)=120

9.360÷40= 9

10.40×20= 800

11.80-25= 55

12.70+45=115

13.90×271) 11/15-3/15=8/15= 180

14.16×6= 96

15.300×6= 1800

16.540÷9=60

17.30×20= 600

18.400÷4= 100

19.350-80= 270

20.160+70=230

五年级下册数学题口算解方程脱式计算要每个10个

10-5.4= 4÷20= 3.5×200= 1.5-0.06=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

0.28+0.12= 7.3+2.7= 7.5—3.4= 1-0.35= 3.6+10= 1000-25= 24×0+12=

7.06×100= 7.6×10= 2.5×10=

1+x=2,1+x=3,1+x=4

X+6.7=8 X-467+3+987 877.9+38+x+1000

五年级下册分数加减法口算题1000急急急!!!!!

+、-、×、÷、= 符号如何来的?

+、-、×、÷和 = 这五个符号,大家对它们都是再熟悉不过的了,但是你知1.01×99= 420÷35= 25×12= 135÷0.5=道它们的来历吗?

远古时期,古希腊人和印度人都是把两个数字写在一起表示加法,把两个数字写得分开一些来表示减法。中世纪后期,欧洲商业逐渐发达。一些商人常在装货的箱子上画一个“+”,表示重量超过一些;画一个“-”,表示重量略微不足。文艺复兴时期,意大利的艺术达·芬奇在他的一些作品中也采用过“+”和“-”的记号。公元14,德国人威德曼在他的著作中正式用这两个符号来表示加减运算。后来经过法国数学家韦达的大力宣传和提倡,这两个符号才开始普及,到1603年终于获得大家的公认。

×、÷符号的使用,不过300多年。据说,英国人威廉·奥特来德1631年首先在他的著作中用“×”表示乘法,后人沿用至今。

中世纪时,数学相当发达,大数学家阿尔·花拉子米曾用“3/4”来表示3被4除。许多人认为,现在通用的分数记号,即来源于此。直到1630年,在英国人约翰·比尔的著作中才出现了“÷”号,据推测他是根据人的除号“—”与比的记号“:”合并转化而成的。

现在绝大多数的出版物中,都用+、-来表示加与减。

×、÷却没有普遍使用,一些的课本中用“.”代替“×”,而在俄国和德国的出版物中一般用“:”来代替“÷”。

少 要 几 分 钟

华罗庚是世界的数学家,他出生在一个贫民家庭,他非常热爱学习,总是争分夺秒地学习,在碰到问题的时候,总是靠自己动脑筋解决。

1965年,华罗庚在他的一本书中出了一道题目。华出这道题的目的,是想训练小朋友做几件事时,合理安排时间的本领。

题目是这样的:洗水壶需要1分钟,烧开水需要15分钟,洗茶杯需要1分钟,拿茶叶需要2分钟,问少要几分钟可以泡好茶?

同学们,怎样合理安排这几件事,才能使所用的时间省呢?那就要能在同一时间内做几件事,先洗水壶,接着烧开水,烧以后,需要等15分钟水才能开。在15分钟内,可以洗茶杯,拿茶叶,水开了就泡茶,这样,只用16分钟就行了。同学们,当你要做几件事时,能不能用华教给我们的方法来安排呢?

想一想:

从这个故事中,会受到什么启发?

304×5= 106×10= 178×3= 78×9=在书店里有卖现成的口算练习册。可以一天做一页或多做几页自由选择。5分钟做完100题且正确率为95%以上为。但很少有孩子5分钟能做完100题,大多在做到60题左右,缺乏训练。多做多练能达到要求。祝您的孩子取得进步。

5/3+7/6=17/6

1/2+1/3=5/6

1/2-1/3=1/6

1/2+3/4-3/10=19/20

2/9+5/6+1/3=25/18

4/5-3/10+2/3=7/6

1/2-3/4+3/8=1/8

5/6-1/3+3/10=1/5

1/2+1/4+1/6+1/8+1/10=137/120

2/3+4/7-3/10=197/210

1/4-2/9+4/5-5/9=49/180

五年级下册数学直接写得数,脱式计算,简便计算分数加减

47、一堆黄铜有4.5吨, 已经运走了1.5吨, 剩下的分3次运完, 平均每次要运多少吨?(列方程)

一、 口算题( 12分 )

4.4÷11= 0.3×0.3= 0÷730= 0.03×10-0.1=

7÷5= 0.25÷0.5= 0.53×7= 125×0.5×0.8=

1.9×0.5= 29×5= 2.3×0.8= 0.2×7.6×50=

二、 简算题( 6分 )

9.9×8.6+0.86

三、 计算题(每道小题 6分 共 12分 )

1.3-7.14÷3.5×1.05

2.[20-(90.75÷6.6+2.25)]×11.6

一、 口算题( 12分 )

0.1×208= 7.2÷36= 4.8÷16=

1.3×50= 0.5×20= 0.81÷0.09=

4.2÷4= 0.98÷7= 0.39÷1.3=

2.5×40= 4.7×2= 0.4×0.5=

二、 简算题( 6分 )

0.46×7.5+0.46×2.5

三、 计算题(每道小题 6分 共 12分 )

1.0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54=1.08÷(3.94+34.3×0.2)-0.08

2.4.8×(11.03-15.6÷7.5)

小学五年级下册数学分数口算题

1) 4/14+8/14=6/7

2) 7/10+2/10=9/10

3) 4/7-3/7=1/7

4) 3/14+7/14=5/7

5) 4/11+5/11=9/11

6) 4/15+2/15=2/5

7) 9/10-3/10=3/5

8) 7/13+5/13=12/13

9) 6/13+5/13=11/13

10) 2/8+3/8=5/8

11) 9/13-9/13=0

12) 9/13+3/13= 12/13

13) 11/12-4/12=7/12

14) 14/15-3/15=11/15

15) 1/13+11/13=12/13

16) 2/15-2/15=0

17) 7/12+3/12=5/6

18) 12/15-9/15=1/5

19) 1/8+2/8=3/8

20) 6/7-6/7= 0

22) 2/13+7/13=9/13

23) 1/11+8/11=9/11

24) 55.645-45123/4-1/4= 1/2

25) 4/15+10/15=14/15

26) 12/14-4/14=4/7

27) 7/13+2/13=9/13

28) 8/13-1/13=7/13

29) 12/14-12/14=0

30) 12/13-6/13=6/13

31) 3/7+3/7=6/7

32) 7/9+1/9=8/9

33) 8/14+2/14=5/7

34) 10/13-8/13=2/13

35) 3/14-3/14=0

36) 1/5+3/5=4/5

37) 1/12+6/12=7/12

38) 5/9+3/9=8/9

39) 7/11-2/11=5/11

40) 12/15-4/15=8/15

41) 1/14+5/14=3/7

42) 7/12-2/12=5/12

43) 2/9+5/9=7/9

45) 6/13-6/130.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54==0

46) 7/14+2/14=9/14

47) 4/8-1/8=3/8

48) 6/8-4/8=1/4

49) 3/7-1/7=2/7

50) 7/10-6/10=1/10

五年级下学期分数加减法口算题200道,附

44) 13/15-1/15=4/5

如下:

(1)1/7+3/8+5/7=1/7+5/7+3/8=6/7+3/8=48/56+21/56=69/56

先分母相同进行运算,再约分。

(2)1-5/9-4/9=1-(5/9+4/9)=1-1=0

连减几个数,等于减去这几个数相加。

(3)4/11+5/6-4/11=4/11-4/11+5/6=0+5/6=5/6

同分母先进行运算。

(4)3/4-1/6+1/4=3/4+1/4-1/6=1-1/6=5/6

符号跟在后一个数前,移动时要带上符号。

(5)7/8-(1/5+1/3)=7/8-(3/15+5/15)=7/8-8/15=41/120

这个没有技巧,只能通分。

(6)1+(1/3-1/6)=1+(2/6-1/6)=1+1/6=1又1/6

通分时别忘分子也要乘。

乘除法

1、分数乘整数,分母不变,分子乘整数,能约分的要约分。

2、分数乘分数,用分子乘分子,用分母乘分母,能约分的要约分。

3、分数除以整数,分母不变,如果分子是整数的倍数,则用分子除以整数,能约分的要约分。

4、分数除以整数,分母不变,如果分子不是整数的倍数,则用这个分数乘这个整数的倒数,能约分的要约分。

5、分数除以分数,等于被除数乘除数的倒数,能约分的要约分。

2/3+1/3=1 3/4-1/4=1/2 27/51-10/51=17/51 1/4+5/12=2/3 5/11+1/4=31/44 1/3+1/5=8/15 2/3+1/3=1 5/3+7/6=17/6 2/3+3/5=19/15 1/4-1/9=5/36 5/8-1/9=37/72 1/2-1/4=1/4 5/9-2/5=7/45 3/4+5/12=7/6 2/3-2/7=8/21 4/3-3/4=7/12 2/8+3/8=5/8 7/12+3/12=5/6 1-6/13=7/13 12/15-4/15=8/15 1/14+5/14=3/7 3/15+10/15=13/15 (不喜勿喷)

1/2+1/3=5/6

1那么=这个符号又是怎么产生的呢?巴比伦和埃及曾用过各种记号来表示相等,而早使用近代的 = 符号却是在中世纪时,在雷科德的名著《智慧的磨刀石》中。他说之所以选择两条等长的平行线作为等号,是因为它们再相等不过了。但是 = 号直到18世纪才普及。/2+2/3=7/6

1/3+1/4=7/12

1/3+3/4=13/12

1/4+1/5=9/20

1/4+4/5=21/20

五年级下册的那个5道分数加法和5道减法要约分,然后在4的方程。

1/2+1/3=5/6

1/2+1/3=7/6

五年级下册数学口算题 人教版 600道

45.403÷13×27

17×40= 100-63= 3.2+1.68= 2.8×0.4=

21) 10/13+2/13=12/13

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

3-2+5-7+9+1.3+2×5-13+0.8-15÷(3+2)=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

北师大版五年级下册数学口算题1000道

1.0.15+1.2/0.24-0.45

2.6.25+3.85-2.125+3.875

3.8+2-8+2

4.254/254

5.7.26-(5.26-1.5)

6.286+198

7.314-202

8.526+301

9.223-99

10.6.25+3.85-2.125+3.875

11.9-245621

12.0.5/11.5-42.75

13.1/2×3/5

14.3.375+5.75+2.25+6.625

15.1001-9036÷18

17.2.14.3+5.72.1

18.30×1/3

19.10245-328

20.2/3×12

21.2.83.1+17.6/8

22.3/5×5/6

23.(50-12.5)/2.5

24.2/5×1/3

25.611047+110-23=87639

26.1/2-1/6

27.3.52.7-52.2/18

28.1/7×1/5

29.3.3750.97+0.976.625

30.25×4/5

31.6.54+2.4+3.46+0.6

32.5/6-1/2

33.95.61.8+95.68.2

34.1/2×1/5

35.600-420/12

36.344/3.6-5.40.25

37.16/2+30/2+90/6

38.3001-1998.

39.5000-10534

40.0.15/0.25+0.751.2

41.(1/2+1/3+1/4)0.24

42.(25+4)4

43.300-4263/21、甲乙两船由相距350千米的两个码头同时出发, 经过7小时相遇.已知甲船的速度比乙船快6千米, 求甲、乙两船的速度各是多少?(用方程解)21

44.0.81/0.25+5.96

46.1.5×4.2-0.75÷0.25

47.3.27×4 +3.27×5.7

48.(1.2+ 1.8)×4.51025-768÷32

49.0.25×80-0.45÷0.9

50.1025-768÷32

1.573×6= 3.52×100 3.54×8= 43.87×4=

78×9= ×0.4= 24×5= 37×8=

104×5= 847×4= 8×42= 5.78×92=

78×2= 245×0= 306×103×0= 132×6=

350×1000= 317×4= 1.52×6= 125×0.8=

302×783×0= 264×8= 5.76×9= 3875×0=

1.854×0×100= 937×4= 285×4= 134×3=

125×8= 25×4= 300×52= 5×42=

1.35×9= 15×8= 125×4= 8.456×1000=

153×46= 173×10= 15×80= 3652007×0=

384÷4= 888÷74 592÷37= 384÷32=

1846÷10= 468÷39=

1+1=2

235+235=470

五年级下册数学口算题(人教版第二单元)

二小数一步乘除法应用题1一种毛线每千克48.36元,买3千克应付多少元?买0.6千克呢?

17×40=680, 100-63=37, 3.2+1.68=4.88, 2.8×0.4= 1.12

0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54=

14-7.4=6.6, 1.92÷0.04=48, 0.32×500=160, 0.65+4.35= 5

10-5.4=4.6, 4÷20=0.2, 3.5×200=700, 1.5-0.06=1.44

0.75÷15=0.05, 0.4×0.8=0.32, 4×0.25=1, 0.36+1.54=2

1.01×99=99.99, 420÷35=12, 25×12=300, 135÷0.5=270

3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4

1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4

3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5

0.51÷17=0.03, 32.8+19=51.8, 5.2÷1.3=4, 1.6×0.4= 0.64

4.9×0.7=3.43, 1÷5=0.2, 6÷12=0.5, 0.87-0.49=0.38

1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100)

2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)

3.8+2-8+2

4.254/254

5.7.26-(5.26-1.5)

6.286+198

7.314-202

8.526+301

9.223-99

10.6.25+3.85-2.125+3.875

11.9-245621

12.0.5/11.5-42.75

13.1/2×3/5

14.3.375+5.75+2.25+6.625

15.1001-9036÷18

17.2.14.3+5.72.1

18.30×1/3

19.10245-328

20.2/3×12

21.2.83.1+17.6/8

22.3/5×5/6

23.(50-12.5)/2.5

24.2/5×1/3

25.611047+639

26.1/2-1/6

27.3.52.7-52.2/18

28.1/7×1/5

29.3.3750.97+0.976.625

30.25×4/5

31.6.54+2.4+3.46+0.6

32.5/6-1/2

33.95.61.8+95.68.2

34.1/2×1/5

35.600-420/12

36.344/3.6-5.40.25

37.16/2+30/2+90/6

38.3001-1998.

39.5000-10534

40.0.15/0.25+0.751.2

41.(1/2+1/3+1/4)0.24

42.(25+4)4

43.300-4263/21

44.0.81/0.25+5.96

46.1.5×4.2-0.75÷0.25

47.3.27×4 +3.27×5.7

48.(1.2+ 1.8)×4.51025-768÷32

49.0.25×80-0.45÷0.9

50.1025-768÷32

51.0.252.694

52.2348+27516

53.2/5/8-1/129/5

54.2.4+2.4(5.375-3.375)

56.0.15+1.2/0.24-0.45

57.3.75-(2.35+0.25/1.25)

58.761/4+2325/100+0.25

59.10-2.87-7.13

60.0.96+9.69.9

61.7.5-5.71/3

62.12.37-3.25-6.75

63.166.8+2.216+16

64.40119+284

65.58.7-16.65/3.7

66.0.44.72.5+(2.3+5.3)

67.9.31-1.125-7.875

68.640+12845

69.8.21.6-0.336/4.2

70.400(0.62+0.08)

2/12=1 3/13=1 3/23=2 3/16=2

4/38=6 5/320=12 7/314=6 8/740=35

4/316=12 9/527=15 2/130=15 12/724=14

30/130=1 51/02=18 19/976=36 4/98=18

5/890=144 99/9899=98 3/146=28 7/128=4

10/190=9 5/3105=63 19/738=14 5/125=5

9/718=14 25/7100=28 9/581=45 8/6=18

123+25=148 123-35=88 56×7=392 135÷5=27

248+89=337 ... 146-23=123 ... 155×5=775 ... 456-12=38...

456+45=501 ...546-457=89 ... 45×10=451 ... 564-12=47...

879+54=933 ...896-546=350 ...56×12=672.... 45-5=9...

457+456=3...

7+14=21 ... 18-9=9...

8+16=24 ... 25-5=20...

9+18=27... 56-45=11...

10+20=30... 45-23=22...

11+22=33... 78-23=55...

12+24=36...

10-3=7

15-4=11

20-5=15

25-6=19

30-7=23

35-8=27

40-9=31

45-10=35

50-11=39

55-12=43

60-13=47

65-14=51

70-15=55

75-16=59

80-17=63

85-18=67

90-19=71

95-20=75

100-21=79

105-22=83

115-24=

120-25=95

125-26=99

130-27=103

13+26=39...

14+28=42...

15+30=45...

16+32=48...

17+34=51...

18+36=54...

19+38=57...

20+40=60...

21+42=63...

22+44=66...

23+46=69...

24+48=72...

25+50=75...

26+52=78...

27+54=81...

28+56=84...

29+58=87...

30+60=90...

31+62=93...

32+64=96...

33+66=99...

5 ÷1 =5

10 ÷2 =5

15 ÷3 =5

20 ÷4 =5

25 ÷5 =5

30 ÷6 =5

35 ÷7 =5

40 ÷8 =5

45 ÷9 =5

50 ÷10 =5

55 ÷11 =5

60 ÷12 =5

65 ÷13 =5

70 ÷14 =5

75 ÷15 =5

80 ÷16 5

85 ÷17 5

90 ÷18 5

95 ÷19 5

100 ÷20 5

2/12=1 3/13=1 3/23=2 3/16=2 4/38=6 5/320=12 7/314=6 8/740=35 4/316=12 9/527=15 2/130=15 12/724=14 30/130=1 51/02=18 19/976=36 4/98=18 5/890=144 99/9899=98 3/146=28 7/128=4 10/190=9 5/3105=63 19/738=14 5/125=5 8/16=38 61/60122=120 7/228=8 6/148=8 9/718=14 25/7100=28 9/581=45 8/6=18

12÷3/5=12×( 5/3) 9÷6/7=9×( 7/6 ) 30÷5/6=30×(6/5 ) 4×(3/2 )=4÷2/3 ( 4 )÷5/7=4×7/5 3÷4/5=3×5/4 ( 24 )÷7/16=24×(16/7 ) A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/4 10×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/2 1÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/15 5/7÷1=5/7

2/12=1 3/13=1 3/23=2 3/16=2

4/38=6 5/320=12 7/314=6 8/740=35

4/316=12 9/527=15 2/130=15 12/724=14

30/130=1 51/02=18 19/976=36 4/98=18

5/890=144 99/9899=98 3/146=28 7/128=4

10/190=9 5/3105=63 19/738=14 5/125=5

9/718=14 25/7100=28 9/581=45 8/6=18

17×40=680, 100-63=37, 3.2+1.68=4.88, 2.8×0.4= 1.12

14-7.4=6.6, 1.92÷0.04=48, 0.32×500=160, 0.65+4.35= 5

10-5.4=4.6, 4÷20=0.2, 3.5×200=700, 1.5-0.06=1.44

0.75÷15=0.05, 0.4×0.8=0.32, 4×0.25=1, 0.36+1.54=2

1.01×99=99.99, 420÷35=12, 25×12=300, 135÷0.5=270

3/4 + 1/4 =1, 2 + 4/9 =22/9, 3 - 2/3 =7/3, 3/4 - 1/2= 1/4

1/6 + 1/2 -1/6 =1/2, 7.5-(2.5+3.8)=1.2, 7/8 + 3/8 =5/4

3/10 +1/5 =1/2, 4/5 - 7/10 =1/10, 2 - 1/6 -1/3 =1.5

0.51÷17=0.03, 32.8+19=51.8, 5.2÷1.3=4, 1.6×0.4= 0.64

4.9×0.7=3.43, 1÷5=0.2, 6÷12=0.5, 0.87-0.49=0.38

回答者:370116 - 武林盟主 十六级 2-25 14:34

1.(1+1/2)(1+1/3)(1+1/4)......(1+1/100)

2.(1-1/2)(1-1/3)(1-1/4)......(1-1/100)

3.8+2-8+2

4.254/254

5.7.26-(5.26-1.5)

6.286+198

7.314-202

8.526+301

9.223-99

10.6.25+3.85-2.125+3.875

11.9-245621

12.0.5/11.5-42.75

13.1/2×3/5

14.3.375+5.75+2.25+6.625

15.1001-9036÷18

17.2.14.3+5.72.1

18.30×1/3

19.10245-328

20.2/3×12

21.2.83.1+17.6/8

22.3/5×5/6

23.(50-12.5)/2.5

24.2/5×1/3

25.611047+639

26.1/2-1/6

27.3.52.7-52.2/18

28.1/7×1/5

29.3.3750.97+0.976.625

30.25×4/5

31.6.54+2.4+3.46+0.6

32.5/6-1/2

33.95.61.8+95.68.2

34.1/2×1/5

35.600-420/12

36.344/3.6-5.40.25

37.16/2+30/2+90/6

38.3001-1998.

39.5000-10534

40.0.15/0.25+0.751.2

41.(1/2+1/3+1/4)0.24

42.(25+4)4

43.300-4263/21

44.0.81/0.25+5.96

46.1.5×4.2-0.75÷0.25

47.3.27×4 +3.27×5.7

48.(1.2+ 1.8)×4.51025-768÷32

49.0.25×80-0.45÷0.9

50.1025-768÷32

51.0.252.694

52.2348+27516

53.2/5/8-1/129/5

54.2.4+2.4(5.375-3.375)

56.0.15+1.2/0.24-0.45

57.3.75-(2.35+0.25/1.25)

58.761/4+2325/100+0.25

59.10-2.87-7.13

60.0.96+9.69.9

61.7.5-5.71/3

62.12.37-3.25-6.75

63.166.8+2.216+16

64.40119+284

65.58.7-16.65/3.7

66.0.44.72.5+(2.3+5.3)

67.9.31-1.125-7.875

68.640+12845

69.8.21.6-0.336/4.2

70.400(0.62+0.08)

2/12=1 3/13=1 3/23=2 3/16=2

4/38=6 5/320=12 7/314=6 8/740=35

4/316=12 9/527=15 2/130=15 12/724=14

30/130=1 51/02=18 19/976=36 4/98=18

5/890=144 99/9899=98 3/146=28 7/128=4

10/190=9 5/3105=63 19/738=14 5/125=5

9/718=14 25/7100=28 9/581=45 8/6=18

123+25=148 123-35=88 56×7=392 135÷5=27

248+89=337 ... 146-23=123 ... 155×5=775 ... 456-12=38...

456+45=501 ...546-457=89 ... 45×10=451 ... 564-12=47...

879+54=933 ...896-546=350 ...56×12=672.... 45-5=9...

457+456=3...

7+14=21 ... 18-9=9...

8+16=24 ... 25-5=20...

9+18=27... 56-45=11...

10+20=30... 45-23=22...

11+22=33... 78-23=55...

12+24=36...

10-3=7

15-4=11

20-5=15

25-6=19

30-7=23

35-8=27

40-9=31

45-10=35

50-11=39

55-12=43

60-13=47

65-14=51

70-15=55

75-16=59

80-17=63

85-18=67

90-19=71

95-20=75

100-21=79

105-22=83

115-24=

120-25=95

125-26=99

130-27=103

13+26=39...

14+28=42...

15+30=45...

16+32=48...

17+34=51...

18+36=54...

19+38=57...

20+40=60...

21+42=63...

22+44=66...

23+46=69...

24+48=72...

25+50=75...

26+52=78...

27+54=81...

28+56=84...

29+58=87...

30+60=90...

31+62=93...

32+64=96...

33+66=99...

5 ÷1 =5

10 ÷2 =5

15 ÷3 =5

20 ÷4 =5

25 ÷5 =5

30 ÷6 =5

35 ÷7 =5

40 ÷8 =5

45 ÷9 =5

50 ÷10 =5

55 ÷11 =5

60 ÷12 =5

65 ÷13 =5

70 ÷14 =5

75 ÷15 =5

80 ÷16 5

85 ÷17 5

90 ÷18 5

95 ÷19 5

100 ÷20 5

2/12=1 3/13=1 3/23=2 3/16=2 4/38=6 5/320=12 7/314=6 8/740=35 4/316=12 9/527=15 2/130=15 12/724=14 30/130=1 51/02=18 19/976=36 4/98=18 5/890=144 99/9899=98 3/146=28 7/128=4 10/190=9 5/3105=63 19/738=14 5/125=5 8/16=38 61/60122=120 7/228=8 6/148=8 9/718=14 25/7100=28 9/581=45 8/6=18

12÷3/5=12×( 5/3) 9÷6/7=9×( 7/6 ) 30÷5/6=30×(6/5 ) 4×(3/2 )=4÷2/3 ( 4 )÷5/7=4×7/5 3÷4/5=3×5/4 ( 24 )÷7/16=24×(16/7 ) A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/4 10×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/2 1÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/15 5/7÷1=5/7

2/12=1 3/13=1 3/23=2 3/16=2

4/38=6 5/320=12 7/314=6 8/740=35

4/316=12 9/527=15 2/130=15 12/724=14

30/130=1 51/02=18 19/976=36 4/98=18

5/890=144 99/9899=98 3/146=28 7/128=4

10/190=9 5/3105=63 19/738=14 5/125=5

9/718=14 25/7100=28 9/581=45 8/6=18

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

0.51÷17= 32.8+19= 5.2÷1.3= 1.6×0.4=

4.9×0.7= 1÷5= 6÷12= 0.87-0.49=

17×40= 100-63= 3.2+1.68= 2.8×0.4=

14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35=

3/4 + 1/4 = 2 + 4/9 = 3 - 2/3 = 3/4 - 1/2=

1/6 + 1/2 -1/6 = 7.5-(2.5+3.8)= 7/8 + 3/8 =

546516+2152121=

1231.5+231510=

1651230+125=

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