
用简便方法计算下面各题↓
1个回答
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12.5*2.5*3.2
=12.5x8x2.5x0.4
=100x1
=100
5.6÷0.32
=56÷(8x0.4)
=7÷0.4
=70÷4
=17.5
100.1x23
=(100+0.1)x23
=2300+2.3
=2302.3
=12.5x8x2.5x0.4
=100x1
=100
5.6÷0.32
=56÷(8x0.4)
=7÷0.4
=70÷4
=17.5
100.1x23
=(100+0.1)x23
=2300+2.3
=2302.3
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