问题 计算题
脱式计算。
(1)72÷(73-72÷72)(2)(120-28×3)÷4(3)820÷20+46×5
(4)5×(65-3600÷72)(5)4200÷(17×6-32)(6)(56-27)×(72÷8)
答案

(1)72÷(73-72÷72)

 =72÷72

 =1(2)(120-28×3)÷4

 =36÷4

 =9(3)820÷20+46×5

 =41+230

 =271

(4)5×(65-3600÷72)

 =5×(65-50)

 =75(5)4200÷(17×6-32)

 =4200÷70

 =60(6)(56-27)×(72÷8)

 =29×9

 =261

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