0.8×0.32-0.8×(2.99÷23)怎么简 - 知识问答

0.8×0.32-0.8×(2.99÷23)怎么简便计算

3个回答

0.8×0.32-0.8×﹙2.99÷23﹚
=0.8×﹙0.32-2.99÷23﹚
=0.8×﹙0.32－2.99×1/23﹚
=0.8×﹙0.32-0.13﹚
=0.8×0.19
=0.8×﹙0.2-0.01﹚
=0.8×0.2-0.8×0.01
=0.16-0.008
=0.152

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