0.72÷(0.3×0.2+0.18)的简便运算

问题描述:

0.72÷(0.3×0.2+0.18)的简便运算

0.72÷(0.3×0.2+0.18)
=0.72÷(0.06+0.18)
=0.72÷0.24
=72÷24
=3
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