计算:(1)56×22+56×33+56×44;(2)222×33+889×66
答案:1 悬赏:80 手机版
解决时间 2021-03-27 23:35
- 提问者网友:沦陷
- 2021-03-27 00:55
计算:(1)56×22+56×33+56×44;(2)222×33+889×66
最佳答案
- 五星知识达人网友:woshuo
- 2021-03-27 01:47
(1)56×22+56×33+56×44
=56×(22+33+44)
=56×99
=56×(100-1)
=56×100-56)
=5600-56
=5544;
(2)222×33+889×66
=33×(222+889×2)
=33×(222+1778)
=33×2000
=66000.
=56×(22+33+44)
=56×99
=56×(100-1)
=56×100-56)
=5600-56
=5544;
(2)222×33+889×66
=33×(222+889×2)
=33×(222+1778)
=33×2000
=66000.
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