八点九二加零点四五乘零点二一用简便计算 - 知识问答

八点九二加零点四五乘零点二一用简便计算

1个回答

8.92+0.45×0.21
=8.92+0.45×（2+0.1）÷10
=8.92+（0.9+0.045）÷10
=8.92+0.945÷10
=8.92+0.0945
=9.0145

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