根据88+67=155计算下面各题.
88+66= | 880+670= | 88+88+67+67= | 155-67= |
计算下列各题.(能简算的写出简算过程)
++6.875+ | ÷+× | ÷(-)× |
〔-(-)〕÷ | X-1=0.2 | X:=21:. |
用竖式计算,并验算最后一题.
826÷59= | 346×25= | 753÷34= |
88+66= | 880+670= | 88+88+67+67= | 155-67= |
++6.875+ | ÷+× | ÷(-)× |
〔-(-)〕÷ | X-1=0.2 | X:=21:. |
826÷59= | 346×25= | 753÷34= |