问题
解答题
列式计算.
(1)17先加上2,再乘以2,然后减去2,结果是多少?
(2)71减去15的2倍,再乘以24,结果是多少?
答案
(1)(17+2)×2-2,
=19×2-2,
=38-2,
=36;
(2)(71-15×2)×24,
=(71-30)×24,
=41×24,
=984.
列式计算.
(1)17先加上2,再乘以2,然后减去2,结果是多少?
(2)71减去15的2倍,再乘以24,结果是多少?
(1)(17+2)×2-2,
=19×2-2,
=38-2,
=36;
(2)(71-15×2)×24,
=(71-30)×24,
=41×24,
=984.