70÷280.8x(4.3x1.25)的简便方法?

2024-12-31 02:06:25
推荐回答(3个)
回答1:

简便计算过程方法如下
解:70÷28
=70÷(4x7)
=70÷7÷4
=10÷4
=2.5
0.8x(4.3x1.25)
=(0.8x1.25)x4.3
=1x4.3
=4.3

回答2:

70÷28
=70÷(4x7)
=70÷7÷4
=10÷4
=2.5
0.8x(4.3x1.25)
=(0.8x1.25)x4.3
=1x4.3
=4.3

回答3:

8×1.25×4.3
10×4.3
=43