1991+199.1+19.91+1.991,用简便算法怎么算?四年级下学期奥数,应该有人会的,求帮助,谢啦~
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 01:44:07
![1991+199.1+19.91+1.991,用简便算法怎么算?四年级下学期奥数,应该有人会的,求帮助,谢啦~](/uploads/image/z/131514-42-4.jpg?t=1991%2B199.1%2B19.91%2B1.991%2C%E7%94%A8%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%E6%80%8E%E4%B9%88%E7%AE%97%3F%E5%9B%9B%E5%B9%B4%E7%BA%A7%E4%B8%8B%E5%AD%A6%E6%9C%9F%E5%A5%A5%E6%95%B0%EF%BC%8C%E5%BA%94%E8%AF%A5%E6%9C%89%E4%BA%BA%E4%BC%9A%E7%9A%84%EF%BC%8C%E6%B1%82%E5%B8%AE%E5%8A%A9%EF%BC%8C%E8%B0%A2%E5%95%A6%7E)
1991+199.1+19.91+1.991,用简便算法怎么算?四年级下学期奥数,应该有人会的,求帮助,谢啦~
1991+199.1+19.91+1.991,用简便算法怎么算?
四年级下学期奥数,应该有人会的,求帮助,谢啦~
1991+199.1+19.91+1.991,用简便算法怎么算?四年级下学期奥数,应该有人会的,求帮助,谢啦~
2000-9+200-0.9+20-0.09+2-0.009
=2222-9.999
=2222-10+0.1
=2212.1
1991+199.1+19.91+1.991
1991+199.1+19.91+1.991=?(简便方法)
简算题1991+199.1+19.91+1.991=
1991+199.1+19.91+1.991
巧算题求解1991+199.1+19.91+1.991
1991+199.1+19.91+1.991+0.1991 怎么简便运算
用简便方法计算:1991+199.1+19.91+1.991
求 算术 1991+199.1+19.91+1.991=?求 算术 1991+199.1+19.91+1.991=?要一些过程,不要结果,要结果计算机
1991+199.1+19.91+1.991,用简便算法怎么算?四年级下学期奥数,应该有人会的,求帮助,谢啦~
19991+199.1+19.91+1.991 88.88*0.9+22.22*6.4 简算
有一串数199141419914141……共1991位数?其中有几个1.9.4
1993×199.2-1992×199.1=( )
1993乘199.2-1992乘199.1思路
150-120除以1.4×0.84 简算17又2/5×37-174×1.9+17又2/5×82 简算1999又1991/1999×1/4-1997/1999 简算
1991*1991-1990*1990
2.5x(1.9+1.9+1.9+1.9)=?
1993乘199.2-1992乘199.1求思路根剧
1993乘199.2-1992乘199.1等于几?