Question

简便方法？

可以算吗





Answer 1

0.25×36
=0.25×(4×9)
=(0.25×4)×9
=1×9
=9
9.4×7.3+2.7×9.4
=9.4×(7.3+2.7)
=9.4×10
=94
3.76×98
=3.76×(100-2)
=3.76×100-3.76×2
=376-7.52
=368.48
12.5×88
=12.5×(8×11)
=(12.5×8)×11
=100×11
=1100
4.7×5.9+5.2×5.9+5.9×0.1
=5.9×(4.7+5.2+0.1)
=5.9×10
=59
4.72×101
=4.72×(100+1)
=4.72×100+4.72×1
=472+4.72
=476.72
3.5×101-3.5
=3.5×101-3.5×1
=3.5×(101-1)
=3.5×100
=350
3.5×2.27+3.5×0.73
=3.5×(2.27+0.73)
=3.5×3
=10.5
(32+5.6)×5
=32×5+5.6×5
=160+28
=188
3.29+0.73-2.29+2.27
=(3.29-2.29)+(0.73+2.27)
=1+3
=4
3.29×0.25×4
=3.29×(0.25×4)
=3.29×1
=3.29
0.125×8.8
=0.125×(8×1.1)
=(0.125×8)×1.1
=1×1.1
=1.1
2.5×4.4
=2.5×(4×1.1)
=(2.5×4)×1.1
=10×1.1
=11
(2.5-0.25)×0.4
=2.5×0.4-0.25×0.4
=1-0.1
=0.9

Answer 2

这个其实很简单，做了你看看，不要光抄答案。

追答