3.5*2.9+0.35*71简便算法是?

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3.5*2.9+0.35*71简便算法是?3.5*2.9+0.35*71简便算法是?3.5*2.9+0.35*71简便算法是?=0.35*29+0.35*71=0.35*(29+71)=353.5*2

3.5*2.9+0.35*71简便算法是?
3.5*2.9+0.35*71简便算法是?

3.5*2.9+0.35*71简便算法是?
= 0.35*29+0.35*71
=0.35*(29+71)
=35

3.5*2.9+0.35*71
=0.35*29+0.35*71
=(29+71)x0.35
=100x0.35
=35
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3.5*2.9+3.5*7.1=35