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简介:
(拆分、凑整)
1.25×2.5×32
=(1.25×8)×(2.5×4)
=10×10
=100
3.2×0.25×12.5
=(0.25×0.4)×(12.5×8)
=0.1×100
=10
0.25×36
=(0.25×4)×9
=1×9
=9
4.8×10.1
=4.8×(10+0.1)
=4.8×10+4.8×0.1
=48+0.48
=48.48
0.125×96
=0.125×8×12
=1×12
=12
12.5×88
=12.5×8×11
=100×11
=1100
2.5×440