题目内容
计算下面各题:
356+75×4 | 809×3-900 | 2100-450×4 | (500-437)÷8. |
分析:(1)先算乘法,再算加法;
(2)先算乘法,再算减法;
(3)先算乘法,再算减法;
(4)先算小括号里的减法,再算除法.
(2)先算乘法,再算减法;
(3)先算乘法,再算减法;
(4)先算小括号里的减法,再算除法.
解答:解:(1)356+75×4,.
=356-300,
=56;
(2)809×3-900,
=2427-900,
=1527;
(3)2100-450×4,
=2100-1800,
=300;
(4)(500-437)÷8,
=63÷8,
=7…7.
=356-300,
=56;
(2)809×3-900,
=2427-900,
=1527;
(3)2100-450×4,
=2100-1800,
=300;
(4)(500-437)÷8,
=63÷8,
=7…7.
点评:考查了整数四则混合运算的顺序.
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