
7.3乘以2.7+3.7乘以7.2用减便方法计算
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7.3乘以2.7+3.7乘以7.2
=0.1×2.7+7.2乘以2.7+3.7乘以7.2
=0.27+7.2×(2.7+3.7)
=0.27+7.2×6
=0.27+43.2
=43.47
=0.1×2.7+7.2乘以2.7+3.7乘以7.2
=0.27+7.2×(2.7+3.7)
=0.27+7.2×6
=0.27+43.2
=43.47
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