7.6×5.3 + 3.7×5.6简便计算?
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这题只有直接计算了,强行用简便方法计算量反而大。
7.6×5.3+3.7×5.6
=40.28+20.72
=61
7.6×5.3+3.7×5.6
=40.28+20.72
=61
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7.6×5.3+3.7×5.6
=(5.6+2)×5.3+3.7×5.6
=5.6×5.3+5.6×3.7+2×5.3
=5.6×(5.3+3.7)+2×5.3
=5.6×9+10.6
=61
=(5.6+2)×5.3+3.7×5.6
=5.6×5.3+5.6×3.7+2×5.3
=5.6×(5.3+3.7)+2×5.3
=5.6×9+10.6
=61
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