问题 解答题

计算下面各题.

(1)(8+15)×(23-12)

(2)25-200÷(20+5)

(3)150+230×62÷31

(4)85.7-(13.5-4.8)

答案

(1)(8+15)×(23-12),

=23×11,

=253;

(2)25-200÷(20+5),

=25-200÷25,

=25-8,

=17;

(3)150+230×62÷31,

=150+14260÷31,

=150+460,

=610;

(4)85.7-(13.5-4.8),

=85.7-8.7,

=77.

单项选择题
填空题