用简便方法计算下列各题. (22+25)×4 105×34-5×34 103×32 99×121
答案:1 悬赏:50 手机版
解决时间 2021-11-28 09:29
- 提问者网友:喧嚣尘世
- 2021-11-27 13:35
用简便方法计算下列各题. (22+25)×4 105×34-5×34 103×32 99×121
最佳答案
- 五星知识达人网友:鱼芗
- 2021-11-27 13:46
(1)(22+25)×4,
=22×4+25×4,
=88+100,
=188;
(2)105×34-5×34,
=(105-5)×34,
=100×34,
=3400;
(3)103×32,
=(100+3)×32,
=100×32+3×32,
=3200+96,
=3296;
(4)99×121,
=(100-1)×121,
=100×121-1×121,
=12100-121,
=11979.
=22×4+25×4,
=88+100,
=188;
(2)105×34-5×34,
=(105-5)×34,
=100×34,
=3400;
(3)103×32,
=(100+3)×32,
=100×32+3×32,
=3200+96,
=3296;
(4)99×121,
=(100-1)×121,
=100×121-1×121,
=12100-121,
=11979.
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息,可以点下面链接进行举报!
大家都在看
推荐资讯