计算下面各题,怎样简便就怎样算.385×99 &...
答案:1 悬赏:0 手机版
解决时间 2021-02-25 05:57
- 提问者网友:骑士
- 2021-02-24 16:16
计算下面各题,怎样简便就怎样算.385×99 &...
最佳答案
- 五星知识达人网友:第四晚心情
- 2021-02-24 17:08
(1)385×99
=385×(100-1)
=38500-385
=38115;
(2)6.3+0.84+3.7+8.16
=(6.3+3.7)+(0.84+8.16)
=10+9
=19;
(3)312×4+188×4
=(312+188)×4
=500×4
=2000;
(4)2000-178-322
=2000-(178+322)
=2000-500
=1500;
(5)85÷(75-70)×4
=85÷5×4
=17×4
=68;
(6)125×72
=125×(80-8)
=125×80-125×8
=10000-1000
=9000.
=385×(100-1)
=38500-385
=38115;
(2)6.3+0.84+3.7+8.16
=(6.3+3.7)+(0.84+8.16)
=10+9
=19;
(3)312×4+188×4
=(312+188)×4
=500×4
=2000;
(4)2000-178-322
=2000-(178+322)
=2000-500
=1500;
(5)85÷(75-70)×4
=85÷5×4
=17×4
=68;
(6)125×72
=125×(80-8)
=125×80-125×8
=10000-1000
=9000.
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