问题
解答题
计算下面各题.
(460-220)÷60
13×(28+16)
75+240÷(20-5)
(90+360)÷(20-5)
答案
(1)(460-220)÷60,
=240÷60,
=4;
(2)13×(28+16),
=13×44,
=572;
(3)75+240÷(20-5)
=75+240÷15,
=75+16,
=91;
(4)(90+360)÷(20-5),
=450÷15
=30.