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.