题目内容

【题目】用简便方法计算下面各题。

0.48×1.5+1.5×0.52 5.84÷0.25÷4

72.6×9.9+7.26 12.5×5.19×0.08

【答案】1.5;5.84

726;5.19

【解析】

0.48×1.5+1.5×0.52

=1.5×(0.48+0.52)

=1.5

5.84÷0.25÷4

=5.84÷(0.25×4)

=5.84÷1

=5.84

72.6×9.9+7.26

=7.26×99+7.26

=7.26×(99+1)

=7.26×100

=726

12.5×5.19×0.08

=12.5×0.08×5.19

=1×5.19

=5.19

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