Question

0.45乘1.2×0.2简便计算

0.45乘1.2×0.2简便计算

Answer 1

原式
=0.45*0.2*1.2
=0.09*1.2
=0.108
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Answer 2

0.45乘1.2×0.2
=0.45×0.2乘1.2
=0.09×1.2
=0.108