33.2/5+0.2*66.8 用简便运算

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33.2/5+0.2*66.8 用简便运算
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33.2/5+0.2*66.8 用简便运算
33.2/5+0.2*66.8 用简便运算

33.2/5+0.2*66.8 用简便运算
33.2/5+0.2*66.8
=33.2*0.2+0.2*66.8
=0.2*(33.2+66.8)
=0.2*100
=20

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33.2/5+0.2*66.8
=33.2*0.2+0.2*66.8
=0.2*(33.2+66.8)
=0.2*100
=20

33.2/5+0.2*66.8
=33.2*0.2+0.2*66.8
=0.2*(33.2+66.8)
=0.2*100
=20

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