
(9.3x4.8)x0.6-1.5怎么简便计算?
1个回答
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您好,很高兴为您解答。
原式=9.3×0.6×(5-0.2)-1.5
=9.3×0.6×5-9.3×0.6×0.2-1.5
=9.3×3-9.3×0.12-1.5
=27.9-0.12×(10-0.7)-1.5
=27.9-1.5-0.12×10+0.12×0.7
=26.4-1.2+0.084
=25.2+0.084
=25.284
原式=9.3×0.6×(5-0.2)-1.5
=9.3×0.6×5-9.3×0.6×0.2-1.5
=9.3×3-9.3×0.12-1.5
=27.9-0.12×(10-0.7)-1.5
=27.9-1.5-0.12×10+0.12×0.7
=26.4-1.2+0.084
=25.2+0.084
=25.284
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