用简便方法计算.4.02-3.5+0.987.08-0.74-1.26 0.81×99+0.81 ...
答案:1 悬赏:20 手机版
解决时间 2021-03-15 11:14
- 提问者网友:骑士
- 2021-03-14 19:53
用简便方法计算.4.02-3.5+0.987.08-0.74-1.26 0.81×99+0.81 ...
最佳答案
- 五星知识达人网友:神的生死簿
- 2021-03-14 20:46
(1)4.02-3.5+0.98,
=4.02+0.98-3.5,
=5-3.5,
=1.5;
(2)7.08-0.74-1.26,
=7.08-(0.74+1.26),
=7.08-2,
=5.08;
(3)0.81×99+0.81,
=0.81×(99+1),
=0.81×100,
=81;
(4)25×(85+85+85+85),
=25×85×4,
=85×(25×4),
=85×100,
=8500.
=4.02+0.98-3.5,
=5-3.5,
=1.5;
(2)7.08-0.74-1.26,
=7.08-(0.74+1.26),
=7.08-2,
=5.08;
(3)0.81×99+0.81,
=0.81×(99+1),
=0.81×100,
=81;
(4)25×(85+85+85+85),
=25×85×4,
=85×(25×4),
=85×100,
=8500.
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