五年级数学乘法运算定律在小数乘法中的推广练习题(最新整理)

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卓越个性化教学讲义乘法运算定律在小数乘法中的推广练习题

乘法交换律、结合律和分配律在小数乘法中一样管用！

1、根据运算定律在下面的横线上填上适当的数，在里填上运算符号。

59×2.5×0.4= ×（×）

7.8×15+2.2×15=( + )×15

0.02×1.25×5×8=( ×)×( ×)

9.63×2.5+9.63×7.5= ( )

×0.2+3×=( +40)×3

×0.8+5×=( +39.2)×5

0.63×99+0.63=( )

2、把左右两边相等的式子用线连起来。

（5+8）×0.4 9×5+9×1.6

4.6×19+

5.4×19 5×0.4+8×0.4

9×(5+1.6) (4.6+5.4) ×19

3.6×4×2.5 3.6×(4×2.5)

3、用简便方法计算下面各题

2.5×(

3.8×0.04) 7.69×101

(8×5.27) ×1.25 46×0.33+54×0.33

0.25×39+0.25 0.125×72

4、下面各题，怎样算简便就怎样算。

9．8+99×9.8 1.25×88

4.65×32+2.5×46.5+0.465×430 7.25×67.875+725×0.7875+7250×0.053375

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At the end, Xiao Bian gives you a passage. Minand once said, "people who learn to learn are very happy people.". In every wonderful life, learning is an eternal theme. As a professional clerical and teaching position, I understand the importance of continuous learning, "life is diligent, nothing can be gained", only continuous learning can achieve better self. Only by constantly learning and mastering the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. This document is also edited by my studio professionals, there may be errors in the document, if there are errors, please correct, thank you!