12.5加87.5除以1.25怎么简便?

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12.5加87.5除以1.25怎么简便?12.5加87.5除以1.25怎么简便?12.5加87.5除以1.25怎么简便?12.5+87.5÷1.25=12.5+(100-12.5)x4/5=12.5+

12.5加87.5除以1.25怎么简便?
12.5加87.5除以1.25怎么简便?

12.5加87.5除以1.25怎么简便?
12.5+87.5÷1.25
=12.5+(100-12.5)x4/5
=12.5+80-10
=82.5

12.5÷1.25+87.5÷1.25=10+70=80

12.5加87.5除以1.25?
=12.5+(87.5+12.5-12.5)除以4分之5
=12.5+(100-12.5)除以4分之5
=12.5+100除以4分之5-12.5除以4分之5
=12.5+100x5分之4-12.5x5分之4
=12.5+20x4-2.5x4
=12.5+80-10
=82.5


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12.5加87.5除以1.25?
=12.5+(87.5+12.5-12.5)除以4分之5
=12.5+(100-12.5)除以4分之5
=12.5+100除以4分之5-12.5除以4分之5
=12.5+100x5分之4-12.5x5分之4
=12.5+20x4-2.5x4
=12.5+80-10
=82.5


(12.5+87.5)除以1.25?
=(100)除以4分之5
=100x5分之4
=20x4
=80

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