二点3×6点5+7点6×6点五,简便计算?
3个回答
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简便计算如下:
2.3×6.5+7.6×6.5
=(2.3+7.6)×6.5
=9.9×6.5
=(10-0.1)×6.5
=65-0.65
=64.35
2.3×6.5+7.6×6.5
=(2.3+7.6)×6.5
=9.9×6.5
=(10-0.1)×6.5
=65-0.65
=64.35
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2.3×6.5+7.6×6.5
=6.5×(2.3+7.6)
=6.5×(1一0.1)
=6.5×1一6.5×0.1
=6.5一0.65
=5.85
=6.5×(2.3+7.6)
=6.5×(1一0.1)
=6.5×1一6.5×0.1
=6.5一0.65
=5.85
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运用乘法分配律简便计算
2.3×6.5+7.6×6.5
=(2.3+7.6)×6.5
=9.9×6.5
=(10-0.1)×6.5
=10×6.5-0.1×6.5
=65-0.65
=64.35
2.3×6.5+7.6×6.5
=(2.3+7.6)×6.5
=9.9×6.5
=(10-0.1)×6.5
=10×6.5-0.1×6.5
=65-0.65
=64.35
本回答被网友采纳
已赞过
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