小数乘法计算600道(含答案)

2022-07-11 10:49:23   文档大全网     [ 字体: ] [ 阅读: ]

#文档大全网# 导语】以下是®文档大全网的小编为您整理的《小数乘法计算600道(含答案)》,欢迎阅读!
乘法,小数,答案,计算,600


小数乘法计算600

第一部分

一.计算题(共50小题) 1.直接写出得数. 0.4×0.02= 30.98=

1.8×0.4= 0.9÷0.01=

6×0.25= 3.9×0.01=

1.25×0.8= 99×0.25=

2.用竖式计算下面各题.

2.4×1.5= 0.46×8.7=(保留一位小数) 2.24×1.8=(保留两位小数)

3.用竖式计算.(得数保留两位小数) 3.35×1.7 5.63×3.9

4.用竖式计算.

2.97×3.5= 6.05×0.83= 0.78×4.5= 3.36×3.67=

5.直接写得数. 6.2×0.3= 0.16×25=

2.5×0.8= 5×2.1=

0.06×5= 0×48.76=

6.用竖式计算(计算结果小数部分超过两位的,保留两位小数) 6.02×0.35 0.59÷1.4






7.按要求算一算.

2.9×1.8 4.58×0.37 0.8×2.5(得数保留一位小数)

5.45×1.72(得数保留两位小数)

8.列竖式计算:

1.8×0.85= 7.62.19= 5018.75=

9.用竖式计算.

4.68×1.2= 1.58×2.5=

10.竖式计算.

1.35×270 6.4×8.05 11.用竖式计算.

36×5.5

18×3.06

3.45×21






0.28×0.25 150×0.12 0.87×1.5

0.4×0.076 1.5×0.062 6.5×0.04



12.竖式计算.

0.94×5.3= 0.91×2.6= 4.06×0.75(保留两位小数)≈ 8.43×1.5= 0.25×3.2= 7.8×0.9(保留一位小数)≈ 13.直接写出得数. 0.25×4= 6.29×100= 14.我会口算. 0.5×4.4= 5×0.4×0.8= 40.15= 15.口算. 3π= 92=

5π= 6232=

5×3.14= 1.5π=

0.5×7= 34.6÷0.5=

80÷1.6= 9.9+10.1= 1.7×5+0.3×5=

5.5÷0.11= 1.25×0.8=

0.06×5= 0.08÷0.1=

1.25×8= 0.02×500=

8.2×6.9×0= 3.4×2=

0.2×18= 0.26×0.5=

16.用竖式计算,得数保留一位小数. 2.4×6.7 3.5×0.5






17.直接写出得数. 0.8×25= 2.4×0.2= 8.29×100= 18.列竖式计算.

0.64×12.5= 2.8×0.17=

19.直接写出得数.

0.7×0.9= 0.14×0.3= 5.5×10= 2.6×0.5=

20.用竖式计算

2.75×3.1= 3.18×5.45=

0.76×2.18≈(得数保留两位小数) 0.09×1.7≈(精确到十分位)

21.列竖式计算

0.36×0.15=(得数保留两位小数) 1.45×0.12=

0.86×1.4=(得数保留一位小数) 6.5×0.39=



0×4.23= 0.02×500= 2.5×0.4=

0.57+0.43= 2.8×10= 4.871.7=




22.用竖式计算. 8×0.12=

1.9×3.5=

2.3×1.29=(验算)

0.401×0.3= 0.45×0.96= 0.17×0.71=(得数保留两位小数)

23.直接写得数. 70×0.01= 2.515×10= 1.1×0.4= 6.5×0.2=

0.1×0.01=

0.870.6=

24.竖式计算.(得数保留一位小数)

0.38×0.23 5.79×3.6 4.6×0.25

25.竖式计算.

3.6×0.25= 9.81.64= 3.1×300=

26.口算. 0.7×0.5= 3.6×2= 0.4×1.7= 0.36+9=

5.7+3=

6.6×2=

27.直接写出计算结果 0.3×1.1= 5.79+2.31+4.21= 0.25×4= 1.5×0.6=

1.59÷0.3=

0.5×101=

100.3= 1.7×3=

4.5×6= 0.1×3.1=

1.2÷0.4= 6.55=






108.880.12= 28.直接写得数. 0.6×0.7= 2.3×4×0= 29.用竖式计算.

0.64÷1.6×1.5=

0.8×5= 0.05×1.6=

1.1×0.4= 0.02×7=

0.32×0.8= 1.36×4.8= 17.3×0.06=

30.用竖式计算.

1.45×0.12= 3.08×0.28= 13.5×26.7= 3.15×0.35≈(保留一位小数)

31.口算.

9.37×0= 7.3×100= 289+7289= 10.04= 4×8÷8×4= 32.列竖式计算:

30.5×0.76 0.54×0.19 33.直接写得数: 2.5×3 4.2×10 2.2×4 34.竖式计算

0.38×0.25= 0.12×15=

8.5×0.39=(验算) 0.87×1.5(保留二位小数)

3.06×2 5.3×100

1.6×4

0.25×4 2.5×6 1.25×8






35.用竖式计算并验算.

14.53+5.67 7.26.45 1.05×2.8 62.9÷1.7

36.口算: 0.5×2= 7÷0.7= 37.口算 0.2×0.4= 0.8×50=

8.2+1.8= 2.4×5=

6.45×0.01= 0.90.52=

2.5×0.4= 10.2×4.5=

0.25×4= 10.125×8=

12.5×8= 1.25×32=

0.125×8= 0.25×56=

38.竖式计算,带*的要验算 *4.23×0.028

36×0.56

31.5×24.5

0.8×0.56 *0.63×1.05 1.8×3.67

39.竖式计算

35.4×0.8 7.63×1.2 0.08×1.14 3.17×2.8(得数保留两位小数)

0.3×5.6(得数保留一位小数) 54.3×0.7(得数保留整数)






40.列竖式计算

24.6÷12 4.32÷1.2 21÷0.15

41.直接写出得数



0×7= 15×0.01= 1.8a+0.2a= 0.12×0.04= 2.5×4×0= 42.口算. 0.12×100= 12+3= 3.74×100= 43.竖式计算

0.18×12 14×0.5 0.02×13

2.6+0.4= 21.221= 0.4×0.4= 0.8×100= 0.72×0.8=

6.2×10= 500÷1000= 8a+a= 6.2÷10= 23.6÷100=

3.25×10=

3.26 ×15 3.1 ×17 1.25×4

8.4 ×15 0.45 ×9 1.5×35

4.28 ×16 2.61 ×18






44.直接写出得数. 40×1.2= 2.4×0.5=

25×0.4= 1.25×80=

63= 3.6÷0.06=

7.8+0.9= 12÷0.4=

0.56+4.44= 82=

45.列竖式计算

2.034×18 4.06×3.8 (积保留两位小数) 46.计算

4×38.2= 8×0.352= 35.6×5= 6.7×3= 47.口算 9.5×0.2= 4.8×50=

3.2×0.5= 4.8×0.25=

0.8×2.5= 8.8×5=

4.4×0.4= 1.4×0.5=

35×0.4= 12.5×4=

48.竖式计算.

0.43×27= 1.85×2.6=验算:

0.37×2.4≈(得数保留一位小数) 7.02×0.56≈(得数保留两位小数)

49.直接写出得数. 0.7×0.9= 1.7×0.03= 50.竖式计算.

2.6×0.5= 1.8×0.04=

0.14×0.3= 0.12×6=

5.5×10= 4.8×5=






5.6×1.8= 0.25×0.046≈(保留两位小数) 3500×0.96=

第二部分

一.计算题(共50小题) 1.列竖式计算: 1.8×0.36=

35.37+28.63=

19.98.75=

1.06×0.48= 18.9+28.65= 22.8718.65=

2.用竖式计算下面各题.

2.4×1.5= 0.46×8.7=(保留一位小数) 2.24×1.8=(保留两位小数)

3.直接写得数. 0.102×100= 3.6÷0.6=

4.2+3= 42=

0.23×0.5= 0.1÷0.01=

0.25×7×0.4= 2×0.5+1=

4.用竖式计算(计算结果小数部分超过两位的,保留两位小数) 6.02×0.35 8.74÷3.8 0.59÷1.4






5.列竖式计算: 1.8×0.85=

6.用竖式计算.

4.8×0.25 9.3×1.3 9.8×0.5 2.1×2.15

7.用竖式计算.(得数保留两位小数) 3.35×1.7 5.63×3.9

8.直接写出得数. 0.12×0.4= 19.280.8= 9.列竖式计算

3.48×1.05(计算并验算) 1.55÷3.8(得数保留两位小数)

10.竖式计算 0.64×18=

25.8×102=

40.7×0.25=

3.8÷100= 2.8÷0.7=

56.56÷0.56 1.6+3.04= 0.53×1000=

108÷2.5÷4=

7.62.19= 5018.75=






13.45×2.6=(保留整数) 4.865 ×8≈(保留整数) 10.23 ×42≈(保留一位小数)



11.直接写得数. 6.2×0.3= 0.16×25=

12.按要求算一算.

2.9×1.8 4.58×0.37

0.8×2.5(得数保留一位小数) 5.45×1.72(得数保留两位小数)

13.用竖式计算. 84×0.25=

0.55×64=

0.47×5.8=

2.5×0.8= 5×2.1=

0.06×5= 0×48.76=

6.06×0.32= 0.075×0.07= 3.7×9.77=

14.列竖式计算.

3.4×0.25 6.5×2.4 0.035×0.6 1.25×0.024






15.用竖式计算.

2.97×3.5= 6.05×0.83= 0.78×4.5= 3.36×3.67=

16.用竖式计算.

36×5.5

0.28×0.25 0.4×0.076 17.竖式计算

4.57×1.8

9.37×8.5

0.125×0.8 2.07×3.6 18×3.06

150×0.12 1.5×0.062 3.75×0.24 3.35×1.6

3.45×21

0.87×1.5

6.5×0.04




18.竖式计算.

0.94×5.3= 0.91×2.6= 4.06×0.75(保留两位小数)≈

8.43×1.5= 0.25×3.2= 7.8×0.9(保留一位小数)≈

19.我会口算. 0.5×4.4= 5×0.4×0.8= 40.15=

80÷1.6= 9.9+10.1= 1.7×5+0.3×5=

5.5÷0.11= 1.25×0.8=

0.06×5= 0.08÷0.1=

20.列竖式计算,带*号的要验算.

25.78+3.12= 13.8×9= *82.67= *5.73+6.7=

21.直接写出得数. 0.125×100= 15.7+4.3= 14.6+0.34= 22.用竖式计算.

4.68×1.2= 1.58×2.5=



60÷100= 25×4= 30.5+2.5=

9÷10= 100.8= 247.542.46=

0.32+4.68= 7×99+7= 26+19+74+81=




23.用竖式计算,得数保留一位小数. 2.4×6.7 3.5×0.5

24.竖式计算

7.6×0.82= 3.25×0.31= 7.5×0.59=(验算)

25.口算. 3π= 92=

26.直接写出得数. 0.8×25= 2.4×0.2= 8.29×100= 27.列竖式计算.

0.64×12.5= 2.8×0.17=

28.列竖式计算

4.8×17 1.88×25 2.4×0.37 0.89×5.3



5π= 6232=

5×3.14= 1.5π=

0.5×7= 34.6÷0.5=

0×4.23= 0.02×500= 2.5×0.4=

0.57+0.43= 2.8×10= 4.871.7=




29.列竖式计算.(得数保留两位小数)

2.375×105 5.16×4.3 0.45×0.206

30.列竖式计算.

0.04×0.12 4.25×8.8 3.84×0.25

31.竖式计算.

3.6×0.25= 9.81.64= 3.1×300=

32.用竖式计算

2.75×3.1= 3.18×5.45=

0.76×2.18≈(得数保留两位小数) 0.09×1.7≈(精确到十分位)

33.列竖式计算

0.36×0.15=(得数保留两位小数) 1.45×0.12=






0.86×1.4=(得数保留一位小数) 6.5×0.39=

34.用竖式计算. 8×0.12=

1.9×3.5=

2.3×1.29=(验算)

0.401×0.3= 0.45×0.96= 0.17×0.71=(得数保留两位小数)35.直接写出得数.

0.7×0.9= 0.14×0.3= 5.5×10= 2.6×0.5= 36.列竖式计算:

30.5×0.76 0.54×0.19

37.竖式计算.

1.35×270 6.4×8.05

38.直接写得数. 70×0.01=

2.515×10=

1.1×0.4=



100.3=






6.5×0.2= 39.列竖式计算

0.1×0.01= 0.870.6= 1.7×3=

24.6÷12 4.32÷1.2 21÷0.15



40

直接写出得数. 0×7= 15×0.01= 1.8a+0.2a= 0.12×0.04= 2.5×4×0=

41.竖式计算.(得数保留一位小数) 0.38×0.23 5.79×3.6 4.6×0.25

42.用竖式计算.

0.32×0.8= 1.36×4.8= 17.3×0.06=

43.竖式计算(*验算)

8.4×0.15= 16.516.3= 9004.58= *56.7+0.33=



2.6+0.4= 21.221= 0.4×0.4= 0.8×100= 0.72×0.8=






44.口算. 0.7×0.5= 0.36+9=

45.用竖式计算.

1.45×0.12= 3.08×0.28= 13.5×26.7=

3.15×0.35≈(得数保留一位小数)

46.竖式计算

0.38×0.25= 0.12×15=

8.5×0.39=(验算) 0.87×1.5 (得数保留二位小数)

47.直接写出计算结果 0.3×1.1= 1.5×0.6= 108.880.12=

5.79+2.31+4.21= 1.59÷0.3= 0.64÷1.6×1.5=



3.6×2= 5.7+3=

0.4×1.7= 6.6×2=

4.5×6= 0.1×3.1=

0.25×4= 0.5×101=

1.2÷0.4= 6.55=




48.竖式计算

0.38×0.25

150×0.12 0.87 ×1.9

1.28×2.3 2.07×0.24 0.17 ×1.05

49.用竖式计算.

8×0.12=(验算) 1.9×3.5=(验算)

0.401×0.3= 0.45×0.96= 0.17×0.71= 50

直接写出得数.



0.13×0.2= 10.9= 0.32÷2= 0.9×0.1= 3.11+2.22= 0.52= 1.620.62= 5.9+4.4=

0.053×100=







0.8×5= 8m6m= 12.5+12.5×7=






第一部分参考答案与试题解析一.计算题(共50小题)1【解答】解: 0.4×0.02=0.008 1.8×0.4=0.72 6×0.25=1.5 30.98=2.02

1.25×0.8=1

0.9÷0.01=90 3.9×0.01=0.039 99×0.25=24.75

2【解答】解:12.4×1.5=3.620.46×8.74.03

2.24×1.84.03 3【解答】解:3.35×1.75.705.63×3.9

21.96 42.97×3.5=10.3956.05×

0.83=5.02155【解答】解:

0.78×4.5=3.513.36×3.67=12.3312

6.2×0.3=1.86 2.5×0.8=2 0.06×5=0.3 0.16×25=4

5×2.1=10.5 0×48.76=0

6【解答】解:6.02×0.352.118.74÷3.8=2.30.59÷1.4

0.42 72.9×1.8=5.224.58×






0.37=1.69460.8×2.5=2.05.45×1.729.37 8【解答】

1.8×0.85=1.537.62.19=5.415018.75=31.25

9【解答】解:4.68×1.2=5.6161.58×2.5=3.95 10【解答】

解:1.35×270=368.5 6.4×8.05=51.52

11【解答】解:136×5.5=198218×3.06=55.08

33.45×21=72.4540.28×0.25=0.07

5150×0.12=18 60.87×1.5=1.305

70.4×0.076=0.0304 81.5×0.062=0.093

96.5×0.04=0.26 12【解答】解:10.94×5.3=4.982






20.91×2.6=2.36634.06×0.753.0548.43×1.5=12.645

50.25×3.2=0.80.25×4=1

1.25×8=10

67.8×0.97.08.2×6.9×0=0 0.2×18=3.6

0.26×0.5=0.13

13【解答】解:

6.29×100=629 0.02×500=10 3.4×2=6.8 14【解答】解: 0.5×4.4=2.2

80÷1.6=50

5.5÷0.11=50 0.06×5=0.3 1.25×0.8=1 0.08÷0.1=0.8

5×0.4×0.8=1.6 9.9+10.1=20 40.15=3.85

1.7×5+0.3×5=10

15【解答】解:

3π=9.42 5π=15.7 5×3.14=15.7 0.5×7=3.5 92=81

6232=27 1.5π=7.85 34.6÷0.5=69.2

16【解答】解:2.4×6.716.1解: 0.8×25=2

0×4.23=0

0.57+0.43=1

3.5×0.51.8 17【解答】

2.4×0.2=0.48 0.02×500=10 2.8×10=28 8.29×100=829 2.5×0.4=1

4.871.7=3.17

18【解答】解:10.64×12.5=822.8×0.17=0.476

19【解答】解:0.7×0.9=0.630.14×0.3=0.0425.5×10=552.6×0.5=1.3 20【解






答】解:12.75×3.1=8.52523.18×5.45=17.3313

0.76×2.181.66(得数保留两位小数)40.09×1.70.2(精确到

210.36×0.150.051.45×

0.12=0.1740.86×1.40.16.5×0.39=2.535 22【解答】

8×0.12=0.961.9×3.5=6.652.3×

1.29=2.9670.401×0.3=0.12030.45×

0.96=0.4320.17×0.710.12 23【解答】解:

70×0.01=0.7 2.515×10=25.15 1.1×0.4=0.44 100.3=10.3 6.5×0.2=1.3 0.1×0.01=0.001 0.870.6=0.27 1.7×3=5.1






24【解答】解:0.38×0.230.15.79×3.620.84.6×0.25

1.2 253.6×0.25=0.99.8

1.64=8.163.1×300=930 26【解答】解:

0.7×0.5=0.35 3.6×2=7.2 0.4×1.7=0.68 4.5×6=27 0.36+9=9.36 5.7+3=8.7 6.6×2=13.2 0.1×3.1=0.31 27【解答】解: 0.3×1.1=0.33 1.5×0.6=0.9

5.79+2.31+4.21=12.31 0.25×4=1 1.59÷0.3=5.3

1.2÷0.4=3

0.5×101=50.5 6.55=1.5

108.880.12=1 0.64÷1.6×1.5=0.6 28【解答】解: 0.6×0.7=0.42 0.8×5=4

1.1×0.4=0.44

2.3×4×0=0 0.05×1.6=0.08 0.02×7=0.14

290.32×0.8=0.2561.36×4.8=6.52817.3×

0.06=1.038 301.45×0.12=0.1743.08×

0.28=0.862413.5×26.7=360.453.15×0.351.1






31【解答】解:9.37×0=07.3×100=730289+7289=27210.04=0.964×8÷8×

4=16 32【解答】解:30.5×0.76=23.18 0.54×

0.19=0.1026 33【解答】解:

2.5×3=7.5 3.06 ×2=6.12 0.25 ×4=1 4.2×10=42 5.3 ×100=530 2.5×6=15 2.2×4=8.8 1.6 ×4=6.4 1.25 ×8=10

34【解答】解:0.38×0.25=0.0950.12×15=1.88.5×

0.39=3.315 0.87×1.5

1.31 35【解答】解:①14.53+5.67=20.27.2

6.45=0.751.05×2.8=2.94验算:

62.9÷1.7=370.5×2=1 0.25×4=1

验算: 36【解答】解:

12.5×8=100 0.125×8=1






7÷0.7=10 10.125×8=0 1.25×32=80 0.25×56=14 37【解答】解:

0.2×0.4=0.08 8.2+1.8=10 6.45×0.01=0.0645 2.5×0.4=1 0.8×50=40

38

2.4×5=12 0.90.52=0.28







10.2×4.5=45.9





*4.23

×

0.028=0.1184436×

0.56=20.1631.5×24.5=771.750.8×

0.56=0.448*0.63×

1.05=0.66151.8×3.67=6.606

39【解答】解:35.4×0.8=28.32 7.63×1.2=9.156

0.08×1.14=0.09123.17×2.88.88 0.3×5.6

1.7 54.3×0.74



40【解答】解:24.6÷




12=2.05 41【解答】解: 0×7=0 15×0.01=0.15 1.8a+0.2a=2a

4.32÷1.2=3.6 21÷0.15=140

2.6+0.4=3 21.221=0.2 0.4×0.4=0.16

0.12×0.04=0.0048 0.8×100=80 2.5×4×0=0

0.72×0.8=0.576

42【解答】解: 0.12×100=12

6.2×10=62

500÷1000=0.5 6.2÷10=0.62

12+3=15 8a+a=9a 3.74×100=374

23.6÷100=0.236 3.25×10=32.5

43【解答】解:10.18×12=2.1623.26×15=48.9 3

3.1×17=52.741.25×4=5514×0.5=768.4×15=126

70.45×9=4.05 81.5×35=52.590.02×13=0.26

104.28×16=68.48

解:

112.61×18=46.98 44【解答】






40×1.2=48 25×0.4=10 63=216 7.8+0.9=8.7 0.56+4.44=5

2.4×0.5=1.2 1.25×80=100 3.6÷0.06=60 12÷0.4=30 82=64

45【解答】解:①2.034×18=36.6124.06×3.815.43

464×38.2=152.88×0.352=2.81635.6×

5=1786.7×3=20.1 47【解答】解:

9.5×0.2=1.9 3.2×0.5=1.6 0.8×2.5=2 4.4×0.4=1.76 35×0.4=14 4.8×50=240 4.8×0.25=1.2 8.8×5=44 1.4×0.5=0.7 12.5×4=50

480.43×27=11.611.85×2.6=4.81

0.37×2.40.9(得数保留一位小数)7.02

×0.563.93(得数保留两位小数)0.7×0.9=0.63

2.6×0.5=1.3

49【解答】解:

0.14×0.3=0.042 5.5×10=55

4.8×5=24

1.7×0.03=0.051 1.8×0.04=0.072 0.12×6=0.72






505.6×1.8=10.08 0.25×0.046

0.01



3500×0.96=336050



第二部分参考答案与试题解析一.

11.8×

0.36=0.64835.37+28.63=6419.98.75=11.151.06×

0.48=0.508818.9+28.65=47.5522.8718.65=4.22

2【解答】解:12.4×1.5=3.620.46×8.74.032.24

×1.84.03 3【解答】解:

0.102×100=102 4.2+3=7.2 0.23×0.5=0.115 0.25×7×0.4=0.7 3.6÷0.6=6

42=16

0.1÷0.01=10

2×0.5+1=2

4【解答】解:6.02×0.352.118.74÷3.8=2.30.59÷1.4

0.42 5解答】解:1.8×0.85=1.53



7.62.19=5.4150




18.75=31.25 64.8×0.25=1.29.3×

1.3=12.099.8×0.5=4.92.1×2.15=4.515 7【解答】解:

3.35×1.75.705.63×3.921.96 8【解答】解:

0.12×0.4=0.048 3.8÷100=0.038 56.56÷0.56=101 1.6 +3.04=4.64 19.280.8=18.48 2.8÷0.7=4

0.53×1000=530 108÷2.5÷4=10.8

9【解答】解:3.48×1.05=3.654验算:1.55÷3.8

0.41 100.64×18=11.5225.8×

102=2631.640.7×0.25=10.17513.45×2.635 4.865

×83910.23×42429.7 11【解答】解:

6.2×0.3=1.86 2.5×0.8=2 0.06×5=0.3 0.16×25=4

5×2.1=10.5 0×48.76=0

122.9×1.8=5.22



4.58×0.37=1.69460.8×




2.5=2.05.45×1.729.37 1384×

0.25=210.55×64=35.20.47×5.8=2.7266.06×

0.32=1.93920.075×0.07=0.005253.7×9.77=36.149

14【解答】解:3.4×0.25=0.85 6.5×2.4=15.6

0.035×0.6=0.021 1.25×0.024=0.03 15【解

2.97×3.5=10.3956.05×0.83=5.02150.78×

4.5=3.513.36×3.67=12.3312 16解答】解:136×5.5=198

218×3.06=55.08 33.45×

21=72.4540.28×0.25=0.07



5




150×0.12=18 60.87×1.5=1.305 7

0.4×0.076=0.0304 81.5×0.062=0.093

96.5×0.04=0.26 17【解答】解:14.57×1.8=8.226

20.125×0.8=0.133.75×0.24=0.949.37×8.5=79.645

52.07×3.6=7.45263.35×1.6=5.36 18【解答】

解:10.94×5.3=4.98220.91×2.6=2.36634.06×0.75

3.0548.43×1.5=12.64550.25×3.2=0.86

7.8×0.97.00.5×4.4=2.2

19【解答】解: 80÷1.6=50

5.5÷0.11=50 0.06×5=0.3 1.25×0.8=1 0.08÷0.1=0.8

5×0.4×0.8=1.6 9.9+10.1=20 40.15=3.85

1.7×5+0.3×5=10






2025.78+3.12=28.913.8×9=124.2*8

2.67=5.33解:

验算:*5.73+6.7=12.43验算: 21【解答】

0.125×100=12.5 60÷100=0.6 9÷10=0.9 15.7+4.3=20

25×4=100 100.8=9.2

0.32+4.68=5 7×99+7=700

14.6+0.34=14.94 30.5+2.5=33 247.542.46=14 26+19+74+81=200

22【解答】解:4.68×1.2=5.6161.58×2.5=3.95 23【解答】

解:2.4×6.716.13.5×0.51.8 24【解答】解:17.6

×0.82=6.23223.25×0.31=1.007537.5×

0.59=4.425 25【解答】解:

3π=9.42 5π=15.7 5×3.14=15.7 0.5×7=3.5 92=81

6232=27 1.5π=7.85 34.6÷0.5=69.2

26【解答】解: 0.8×25=2

0×4.23=0

0.57+0.43=1

2.4×0.2=0.48 0.02×500=10 2.8×10=28 8.29×100=829 2.5×0.4=1

4.871.7=3.17






27【解答】解:10.64×12.5=822.8×0.17=0.476

284.8×17=81.61.88×25=472.4×

0.37=0.8880.89×5.3=4.717 29【解答】解:2.375×105

249.38 5.16×4.322.19 0.45×

0.2060.09 30【解答】解:0.04×0.12=0.0048 4.25×

8.8=37.43.84×0.25=0.952 313.6×

0.25=0.99.81.64=8.163.1×300=930 32

答】解:12.75×3.1=8.52523.18×5.45=17.3313






0.76×2.181.66(得数保留两位小数)40.09×1.70.2(精确到

330.36×0.150.051.45×

0.12=0.1740.86×1.40.16.5×0.39=2.535 34【解答】

8×0.12=0.961.9×3.5=6.652.3×

1.29=2.9670.401×0.3=0.12030.45×

0.96=0.4320.17×0.710.12 350.7×

0.9=0.630.14×0.3=0.0425.5×10=552.6×0.5=1.3 36【解答】解:30.5×

0.76=23.18 0.54×0.19=0.1026

371.35×270=368.5 6.4×






8.05=51.52 38【解答】解:

70×0.01=0.7 2.515×10=25.15 1.1×0.4=0.44 100.3=10.3 6.5×0.2=1.3 0.1×0.01=0.001 0.870.6=0.27 1.7×3=5.1

39解答】解:24.6÷12=2.05 4.32÷1.2=3.6 21

÷0.15=1400×7=0 15×0.01=0.15 1.8a+0.2a=2a

40【解答】解: 2.6+0.4=3 21.221=0.2 0.4×0.4=0.16

0.12×0.04=0.0048 0.8×100=80 2.5×4×0=0

0.72×0.8=0.576

41【解答】解:0.38×0.230.15.79×3.620.84.6×0.25

1.2 420.32×0.8=0.2561.36×

4.8=6.52817.3×0.06=1.038 438.4×






0.15=1.2616.516.3=10.21900

4.58=895.42*56.7+0.33=57.03 44【解答】解:

0.7×0.5=0.35 3.6×2=7.2 0.4×1.7=0.68 4.5×6=27 0.36+9=9.36 5.7+3=8.7 6.6×2=13.2 0.1×3.1=0.31

45【解答】解:1.45×0.12=0.1743.08×0.28=0.862413.5

×26.7=360.453.15×0.351.1 46【解答】0.38×

0.25=0.0950.12×15=1.88.5×

0.39=3.315 0.87×1.5

1.31

0.3×1.1=0.33

47【解答】解:

5.79+2.31+4.21=12.31 0.25×4=1

1.2÷0.4=3






1.5×0.6=0.9 1.59÷0.3=5.3 0.5×101=50.5 6.55=1.5

108.880.12=1 0.64÷1.6×1.5=0.6

48【解答】解:0.38×0.25=0.095150×0.12=18 0.87

×1.9=1.6531.28×2.3=2.9442.07×

0.24=0.49680.17×1.05=0.1785 49【解答】解:①8×

0.12=0.96 1.9×

3.5=6.650.401×0.3=0.12030.45×

0.96=0.4320.17×0.71=0.1207

0.32÷2=0.16

50【解答】解: 0.8×5=4 8m6m=2m

0.13×0.2=0.026 10.9=0.1 0.9×0.1=0.09 1.620.62=1

3.11+2.22=5.33 0.52=0.25 5.9+4.4=10.3

0.053×100=5.3 12.5+12.5×7=100













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