1.25x17.6+62.5除以0.8简便计算

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1.25x17.6+62.5除以0.8简便计算

1.25x17.5+62.5÷0.8
=1.25x17.5+62.5÷(4/5)
=5/4x17.5+62.5×5/4
=4/5×(17.5+62.5)
=5/4×80
=5×20
=100