题目内容
递等式计算. 250-75+25 |
200-48÷4 | (100-75)×3 |
7×24+25 | 24÷4×6 | 420÷7-25. |
分析:(1)从左向右进行计算即可;
(2)先算除法,再算减法;
(3)先算小括号里的减法,再算乘法;
(4)先算乘法,再算加法;
(5)从左向右进行解答即可;
(6)先算除法,再算减法.
(2)先算除法,再算减法;
(3)先算小括号里的减法,再算乘法;
(4)先算乘法,再算加法;
(5)从左向右进行解答即可;
(6)先算除法,再算减法.
解答:解:(1)250-75+25,
=175+25,
=200;
(2)200-48÷4,
=200-12,
=188;
(3)(100-75)×3,
=25×3,
=75;
(4)7×24+25,
=168+25,
=193;
(5)24÷4×6,
=6×6,
=36;
(6)420÷7-25,
=60-25,
=35.
=175+25,
=200;
(2)200-48÷4,
=200-12,
=188;
(3)(100-75)×3,
=25×3,
=75;
(4)7×24+25,
=168+25,
=193;
(5)24÷4×6,
=6×6,
=36;
(6)420÷7-25,
=60-25,
=35.
点评:此题考查了整数四则混合运算的顺序,注意有小括号里的要先算小括号里的运算.
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