| 36×25÷9 | 24×(34+22) | 376÷(123-119) |
| 248+399÷7 | 726-160÷4 | 360÷(2×3) |
=900÷9,
=100;
(2)24×(34+22),
=24×56,
=1344;
(3)376÷(123-119),
=376÷4,
=94;
(4)248+399÷7,
=248+57,
=305;
(5)726-160÷4,
=726-40,
=686;
(6)360÷(2×3),
=360÷6,
=60.
分析:(1)从左向右进行计算,
(2)先算小括号里的加法,再算括号外的乘法,
(3)先算小括号里的减法,再算括号外的除法,
(4)先算除法,再算加法,
(5)先算除法,再算减法,
(6)先算小括号里的乘法,再算括号外的除法.
点评:考查了整数四则混合运算的顺序,有小括号的要先算小括号里的运算.