问题
解答题
脱式计算.
627+4650÷75×18
(960-3200÷16)×23
3200÷(1280-72×15)
300-300÷15×6.
答案
(1)627+4650÷75×18,
=627+62×18,
=627+1116,
=1743;
(2)(960-3200÷16)×23,
=(960-200)×23,
=760×23,
=17480;
(3)3200÷(1280-72×15),
=3200÷(1280-1080),
=3200÷200,
=16;
(4)300-300÷15×6,
=300-20×6,
=300-120,
=180.