计算下面各题,并验算.82.4-3.46 3.6÷0.75 4.07×201

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计算下面各题,并验算.82.4-3.46 3.6÷0.75 4.07×201

计算下面各题,并验算.82.4-3.46 3.6÷0.75 4.07×201
计算下面各题,并验算.
82.4-3.46 3.6÷0.75 4.07×201

计算下面各题,并验算.82.4-3.46 3.6÷0.75 4.07×201
82.4-3.46= 78.94
验:78.94+3.46=82.4
3.6/0.75=4.8
验:4.8*0.75=3.6
4.07*201= 818.07
验:818.07/201=4.07
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82.4-3.46
=82.4-3.4-0.06
=79-0.06
=78.94

3.6÷0.75
=3.6×4/3
=4.8

4.07×201
=4.07×(200+1)
=4.07×200+4.07×1
=814+4.07
=818.07

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