早教吧 育儿知识 作业答案 考试题库 百科 知识分享

递等式计算(能巧算的要巧算)125×9-125724-47+176-536208÷32-7975×32+6875×32+75×68(764-536)×46.

题目详情
递等式计算(能巧算的要巧算)
125×9-125       724-47+176-53       6208÷32-79
75×32+68      75×32+75×68      (764-536)×46.

125×9-125       724-47+176-53       6208÷32-79
75×32+68      75×32+75×68      (764-536)×46.
125×9-125       724-47+176-53       6208÷32-79125×9-125       724-47+176-53       6208÷32-7975×32+68      75×32+75×68      (764-536)×46.75×32+68      75×32+75×68      (764-536)×46.
▼优质解答
答案和解析
(1)125×9-125
=125×(9-1)
=125×8
=1000;

(2)724-47+176-53
=(724+176)-(47+53)
=900-100
=800;

(3)6208÷32-79
=194-79
=115;

(4)75×32+68
=2400+68
=2468;

(5)75×32+75×68
=75×(32+68)
=75×100
=7500;

(6)(764-536)×46
=228×46
=10488.