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6.4×6.5-0.64×64
=6.4×6.5-6.4×6.4
=(6.5-6.4)×6.4
=0.1×6.4
=0.64
=6.4×6.5-6.4×6.4
=(6.5-6.4)×6.4
=0.1×6.4
=0.64
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6.4x6.5一0.64x64
=6.4×6.5-6.4×6.4
=6.4×(6.5-6.4)
=6.4×0.1
=0.64
=6.4×6.5-6.4×6.4
=6.4×(6.5-6.4)
=6.4×0.1
=0.64
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2016-10-09
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简便计算6.4x6.5一0.64x64
=6.4×6.5-6.4×6.4
=6.4×(6.5-6.4)
=6.4×0.1
=0.64
=6.4×6.5-6.4×6.4
=6.4×(6.5-6.4)
=6.4×0.1
=0.64
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评论
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