直接写出得数. 0.2×25= 3.5÷0.05= 0.6×0.7= 24.3×0.3=3÷6= 0.48÷0.6= 1.5×0.6= 8×0.04=
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.
简便计算 ①2.5×3.7×4 ②3.14×43+72×3.14﹣150×0.314.