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?](/uploads/image/z/188627-59-7.jpg?t=3.5%2A2.9%2B0.35%2A71%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E6%98%AF%3F)
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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)
=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