北师大,四年级下册,小数乘法,运算律,练习题

小数乘法运算律练习题

6.73×9.8 4.4×2.50.125×88 3.4×1.02

1.25×3.7×0.8 3.5×1.73+8.17×3.58.6×1.82+0.78×8.6

8.13+99×8.13 6.34×990.27×76+7.6×7.30.25×1.3×0.4 0.125×64 2.5×7.1×4 3.26×5.7－3.26×0.79.9×212

8.75×11－8.75 7.28×99+7.28 55.6×99＋55.6

1.25×213×0.87.5×0.36﹣0.36×6.5 3.42×5.7＋4.3×3.42

0.68×101 4.3×50×0.2 19.625－(4.379＋9.625)

8.05×3.4+7.6 64－2.64×0.516.12×99＋16.12

5.2×0.9＋0.9 3.94+34.3×0.2 3.6×9.85-5.46

6.58×4.5×0.926×15.7＋15.7×24 (2.275＋0.625)×0.28

8.7×17.4-8.7×7.48.9×1.1×4.7 2.7×5.4×3.9

2.8×0.5+1.58 32＋4.9－0.9 4.8－4.8×0.5

(1.25－0.125)×87.09×10.8－0.8×7.09 0.87×3.16+4.64

13.5×0.98 4.8×100.156.5×99＋56.5

12.5×8.812.5×0.4×2.5×8(9.37+9.37+9.37+9.37)×2.5

6.81+6.81×990.25×185×40 4.4×0.8－3.4×0.8

7.69×101 4.36×12.5×8 27.5×3.7－7.5×3.7

0.25×8.5×412.5×0.96×0.8 0.25×0.73×4

0.25×16.2×4 1.25×2.5×32 3.2×0.25×12.5 0.25×36

(1.25－0.125)×8 4.8×10.1 3.6×102 0.39×199 0.32×403 3.65×10.1 0.85×9.9

15.6×2.1－15.6×1.1 56.5×99＋56.5 9.7×99＋9.7

3.9×2.7＋3.9×7.3 5.4×11-5.4 10.7×16.1-15.1×10.7

8.9×1.01 1.87×99＋1.87 2.5×（0.4-0.04）

27.74×（2.8－1.3）＋1.5×2.26 10.6×0.35－9.6×0.35

0.65×1010.25×12.5×32 1.1×0.87-0.87

0.5×（0.2＋2.4） 4.6-0.6×5.5 3.72×3.5＋6.28×3.5