4.7×28+52×2点8+2.8计算下面各题能简便的要简算?
2个回答
2022-09-14
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简便计算过程如下
4.7×28+52×2.8+2.8
=4.7×10×2.8+52×2.8+2.8
=47×2.8+52×2.8+2.8
=47×2.8+52×2.8+1×2.8
=2.8×(47+52+1)
=2.8×100
=280
望采纳
4.7×28+52×2.8+2.8
=4.7×10×2.8+52×2.8+2.8
=47×2.8+52×2.8+2.8
=47×2.8+52×2.8+1×2.8
=2.8×(47+52+1)
=2.8×100
=280
望采纳
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