题目内容
脱式计算. 36-27+43 |
48÷6×5 | 42+6×4 |
(26-19)×5 | 37-27÷3 | 64÷(24-16) |
(23+22)÷4 | 80+(100-86) |
分析:(1)(2)从左往右依次运算;
(3)先算乘法,再算加法;
(4)(6)(7)(8)先算括号内的,再算括号外的;
(5)先算除法,再算减法.
(3)先算乘法,再算加法;
(4)(6)(7)(8)先算括号内的,再算括号外的;
(5)先算除法,再算减法.
解答:解:(1)36-27+43,
=9+43,
=52;
(2)48÷6×5,
=8×5,
=40;
(3)42+6×4,
=42+24,
=66;
(4)(26-19)×5,
=7×5,
=35;
(5)37-27÷3,
=37-9,
=28;
(6)64÷(24-16),
=64÷8,
=8;
(7)(23+22)÷4,
=45÷4,
=11.25;
(8)80+(100-86),
=80+14,
=94.
=9+43,
=52;
(2)48÷6×5,
=8×5,
=40;
(3)42+6×4,
=42+24,
=66;
(4)(26-19)×5,
=7×5,
=35;
(5)37-27÷3,
=37-9,
=28;
(6)64÷(24-16),
=64÷8,
=8;
(7)(23+22)÷4,
=45÷4,
=11.25;
(8)80+(100-86),
=80+14,
=94.
点评:此题考查整数的四则混合运算,注意运算顺序和运算法则.
练习册系列答案
相关题目
脱式计算
2000-36×42÷14 | 5.97+3.8×7.2-24.6 |
1.25+(7.8×-) | (+)×27÷. |