6.3÷0.34×0.51÷7.2×6.4÷0.12简便计算

题目

6.3÷0.34×0.51÷7.2×6.4÷0.12简便计算

答案

6.3÷0.34×0.51÷7.2×6.4÷0.12
=6.3÷7.2×6.4×0.51÷0.34÷0.12
=7×0.9÷0.9÷8×8×0.8×（0.51÷0.34）÷0.12
=7×0.8×1.5÷0.12
=7×0.8×12.5
=7×10
=70
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