早教吧作业答案频道 -->其他-->
递等式计算,能巧算的要巧算.630÷6+598842-462-23857+43×8708+247+1928×78-8×7067×4÷2.
题目详情
递等式计算,能巧算的要巧算.
630÷6+598
842-462-238
57+43×8
708+247+192
8×78-8×70
67×4÷2.
630÷6+598
842-462-238
57+43×8
708+247+192
8×78-8×70
67×4÷2.
▼优质解答
答案和解析
(1)630÷6+598,
=105+598,
=703;
(2)842-462-238,
=842-(462+238),
=842-700,
=142;
(3)57+43×8,
=57+344,
=401;
(4)708+247+192,
=708+192+247,
=900+247,
=1147;
(5)8×78-8×70,
=(78-70)×8,
=8×8,
=64;
(6)67×4÷2,
=67×(4÷2),
=67×2,
=134.
=105+598,
=703;
(2)842-462-238,
=842-(462+238),
=842-700,
=142;
(3)57+43×8,
=57+344,
=401;
(4)708+247+192,
=708+192+247,
=900+247,
=1147;
(5)8×78-8×70,
=(78-70)×8,
=8×8,
=64;
(6)67×4÷2,
=67×(4÷2),
=67×2,
=134.
看了 递等式计算,能巧算的要巧算....的网友还看了以下:
计算7.8×2.6-7.8×0.6可以运用什么进行简便计算 2020-05-13 …
用简便方法计算7.8×5.4+2.2×5.4 2020-05-15 …
计算7×8和56÷7用同一句乘法口诀.(判断对错). 2020-06-09 …
计算7×8和56÷7用同一句乘法口诀.(判断对错). 2020-06-27 …
简便计算7/8-(5/12-1/6) 2020-07-09 …
同学们在计算7.8×1.1时,出现了如下三种结果,你认为哪两种结果肯定是错误的,把理由写在算式后面 2020-07-13 …
简算7×8/15-7×12/35+7×16/63-20/99×726×28×(1简算7×8/15- 2020-07-17 …
7.87.8÷56=7.8÷()÷()0.247.8÷0.4÷0.2=0.24÷()×()87.8 2020-07-17 …
怎样简便就怎样算7.8×101514÷59×64-159×[34-(716-14)]34×0.53 2020-07-18 …
计算7.8+7.98+998+.+7.9999999998的整数部分是什么? 2020-12-23 …