来自邱丹丹的问题
【①126又1/49÷25②(1+1/2+1/3+1/4)×(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)×(1/2+1/3+1/4)③48又7/10×999+48.7÷(2-1/2-1/3-1/6)④(1/5+1/7+1/9+1/11)×(1/7+1/9+1/11+1/13)-(1/5+1/7+1/9+1/11+1/13)×(1/7+1/9+1/11简便】
①126又1/49÷25
②(1+1/2+1/3+1/4)×(1/2+1/3+1/4+1/5)-(1+1/2+1/3+1/4+1/5)×(1/2+1/3+1/4)
③48又7/10×999+48.7÷(2-1/2-1/3-1/6)
④(1/5+1/7+1/9+1/11)×(1/7+1/9+1/11+1/13)-(1/5+1/7+1/9+1/11+1/13)×(1/7+1/9+1/11
简便计算啦!
1回答
2020-03-01 23:32