用简便方法计算下列各题。(1)136&tim

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用简便方法计算下列各题。(1)136×5÷8 (2)125×(16÷10)(3)4032÷(8×9)(4)225÷9÷5(5)(81+72)÷9

参考答案:

(1) 136×5÷8

=136÷8×5

=17×5

=85

(2) 125×(16÷10)

=125×16÷10

=2000÷10

=200

(3) 4032÷(8×9)