4.5乘以3.6加上5.2乘以0.35的简便运算 - 知识问答

4.5乘以3.6加上5.2乘以0.35的简便运算

1个回答

4.5×3.6+5.2×0.35
=4.5×2×1.8+2.6×2×0.35
=9×1.8+2.6×7
=9×9×0.2+18.2
=16.2+18.2
=34.4

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