计算(1)(2)(3)(4)2222×4444+8888×8889.
.
15.06﹣5.27﹣4.73.
4999+499+49+3.
简便计算下面各题.44×0.25 (+)×15×17 85.57﹣(5.57﹣3.8)99999×77778+33333×66666 27×+136×+180×.