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7.3乘2.7加3.7乘7.2怎么简便运算

题目详情
7.3乘2.7加3.7乘7.2怎么简便运算
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答案和解析
7.3×2.7+3.7×7.2
=7.3×0.3×9+3.7×0.8×9
=2.19×9+2.96×9
=(2.19+2.96)×9
=5.15×9
=46.35