用竖式计算,打★的要验算.627÷33= ★224÷28= ★720÷68= 966÷42=
.
15.06﹣5.27﹣4.73.
4999+499+49+3.
简便计算下面各题. 44×0.25(+)×15×1785.57﹣(5.57﹣3.8) 99999×77778+33333×6666627×+136×+180×.
计算下面各题,能简算的要简算. 4.05﹣2.8﹣0.71.25×32×2.5[1﹣(﹣)]×99.9×98+(0.8﹣)×999.