| 138×5+214 | 496-(387-128) | 849-81÷9 | 326×2×4. |
=690+214,
=904;
(2)496-(387-128),
=496-259,
=237;
(3)849-81÷9,
=849-9,
=840;
(4)326×2×4,
=652×4,
=2608.
分析:(1)先算乘以,再算加法,
(2)先算小括号里的减法,再算括号外的减法,
(3)先算除法,再算减法,
(4)从左向右进行计算即可.
点评:此题考查了整数四则混合运算的顺序,注意有小括号的要先算括号里的运算.