1.68+68×31+68×69+68×99 2.47×520+530×52,怎样简便计算?
人气:136 ℃ 时间:2020-04-03 03:07:04
解答
1.68+68×31+68×69+68×99
=68×(1+31+69+99)
=69×200
=13800
2.47×520+530×52
=470×52+530×52
=1000×52
=52000
推荐
猜你喜欢
- 嫦娥一号于几年几月几日发射,航天员是谁,
- 某商场从三楼去二楼的传送电梯共长十米,传送速度是每秒1.2米.
- 在极坐标系(ρ,θ)(ρ>0,0
- We have to stay at hone.和The girl con sing and dance well.这两句话怎样变成一般疑问句?
- 英语翻译
- 词组get along with 和get on with 有无区别?请举出例句.
- 甲乙两人相距40千米,甲先出发1.5小时,乙再出发,甲在后乙在前,两人同向而行,甲的速
- are you tired today ?how can you relax yourself 翻译回答在线等.