3.75×138+1.25×86巧算
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3.75×138+1.25×86巧算3.75×138+1.25×86巧算3.75×138+1.25×86巧算3.75×138+1.25×86=1.25×3×138+1.25×86=1.25×(3×13
3.75×138+1.25×86巧算
3.75×138+1.25×86巧算
3.75×138+1.25×86巧算
3.75×138+1.25×86
=1.25×3×138+1.25×86
=1.25×(3×138+86)
=1.25×500
=625
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3.75×138+1.25×86
=1.25×3×138+1.25×86
=1.25×(3×138+86)
=1.25×500
=625
3.75×138+1.25×86
=1.25×3×138+1.25×86
=1.25×(3×138+86)
=1.25×500
=625
3.75=3×1。25
3.75×138+1.25×86
=1.25×3×138+1.25×86
=1.25×(3×138+86)
=1.25×500
=625
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