Question

小数的简便计算及答案

Answer 1

3.56＋4.54＋6.44＋5.46 5.03－0.25－1.75

4.86＋5.24－1.86 8.13＋(1.87－0.5)

23.7－1.6－3.7－8.4 87.4－(21.25＋17.4) －8.75

14.6－9.9 1.9＋1.99＋1.999 19.43－(6.72＋1.43)

2.69－1.35＋3.31－2.65 17.28－3.86－6.14＋2.72

5.25＋3.76－2.76＋4.75 4.5＋5.5－4.5＋5.5

21.53－(13.64－8.47) 28.49－1.1－2.47－6.43

7.34＋2.5＋2.66－1.5 3.25＋1.79－0.59＋1.75

3.79－1.225－(3.775－6.21) 27.38－5.34＋2.62－4.66

二、课后练习

4.12＋8.59＋5.88＋1.41 12.87－1.34－2.66

21.53＋4.87－2.53 15.21＋(4.79－2.8)

12.19－2.6－2.19－3.4 109.72－(5.62＋9.72)

21.3－19.9 39.6－(18.31＋9.6) －1.69

14.25－2.45＋5.75－3.55 24.51－3.14－6.86＋4.49

41.25＋5.87－3.87＋4.65 11.5＋8.5－11.5＋8.5

8.13－(12.25－11.87) 34.34－2.1－2.35－5.55

81.67＋4.17＋4.33－2.17 1.35＋12.87－1.37＋8.65

15.51－3.334－(2.666－4.49) 21.62－4.35＋8.38－5.65

小数乘除法简便计算

一、课堂练习

0.125×3.69×8 (2.5－0.25) ×4 8.59×101

0.36×15.7－0.36×13.7 5.64×1.28＋8.72×5.64

0.63×199 60÷48 7.73×0.5＋2.27÷2

4.37＋99×4.37 10.1×38.67－3.867 9.9÷5.5

8.63×25－0.063×250 9.3×10.1 3.99÷0.125÷8

0.99×0.81＋0.11×9×0.19 (5.23＋5.23＋5.23＋5.23) ×25

0.25×1.25×0.67×32 2.49×3.8＋0.249×62

33.41÷4－3.41×0.25 54.8－0.3×0.3－3.91

(6.4＋48) ÷0.8 15×9.7 2.5×(4＋8) ×12.5

二、课后练习

0.25×8×2.12 （12.5－1.25）×8 5.7×18.34－57×0.834

3.87×4.12＋5.88×3.87 8.8÷5.5 3.25×199

5.64＋99×5.64 20.1×35.22－3.522 5.2×20.1

3.7×1.63－0.37×15.3 0.88×0.78＋0.11×0.22×0.8

2.5×(4.21＋4.21＋8.42) 1.25×1.86×32×0.25

4.34×0.25＋0.25×5.56＋0.025 (7.2＋54) ÷0.9

2.73×0.125＋7.27÷8 56.34÷2－6.34×0.5

11.43÷0.8÷12.5 12×19.8 21.56－0.4×0.4－3.84

80÷32 7.56×101 1.25×2.5×(8＋4)