赚现金
计算下面各题,能用简便算法的用简便算法12.25﹣3.1+0.85﹣6.17 2.65×1.7+1.35×1.73.6÷(1.2+0.5)×5 0.125×0.38×8021.36÷0.8﹣12.9.
试题篮