1.25x4.6+0.75的简便方法
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1.25×4.6+0.75
=0.25×5×4.6+0.25×3
=0.25×23+0.25×3
=0.25×(23+3)
=0.25×26
=0.25×(4×6+2)
=0.25×4×6+0.25×2
=1×6+0.25×2
=6+0.5
=6.5
=0.25×5×4.6+0.25×3
=0.25×23+0.25×3
=0.25×(23+3)
=0.25×26
=0.25×(4×6+2)
=0.25×4×6+0.25×2
=1×6+0.25×2
=6+0.5
=6.5
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