题目内容
【题目】脱式计算下面各题,能简算的要简算。
(1)4.9+81.6÷0.8
(2)0.25×6.3×0.4
(3)3.65×99
【答案】(1)106.9
(2)0.63
(3)361.35
【解析】
(1)4.9+81.6÷0.8
=4.9+102
=106.9
(2)0.25×6.3×0.4
=0.25×0.4×6.3
=0.1×6.3
=0.63
(3)3.65×99
=3.65×100-3.65×1
=365-3.65
=361.35

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