每棵树应该种在哪个盆里?连一连.
计算下面各题,能用简便算法的用简便算法0.25×1.2+2.8×0.25 0.65×101 67.8﹣7.8×4.93.2×1.25×2.5 0.8×(2.5×0.125) 16.8÷40÷0.25.
计算下面各题,能简算的要简算.第①②小题列竖式计算并验算.①356﹣35.6= ②1502÷51= ③45÷[72×(﹣)]④1.9﹣17.86÷9.4+19 ⑤25×32×125 ⑥9.63﹣(3.63+0.98)
脱式计算(能简算的要简算):10.68×2.4﹣2.4×5.68; 2.5×2.8×4;3.46×0.5+23.9; (8﹣0.8)×1.25.
下面各题怎样算简便就怎样算.(1)27.3+73.2+72.7 (2)43.25﹣10.4﹣3.25 (3)3.8+1.37+6.2+12.63(4)76.8﹣27.4﹣12.6 (5)5.85+1.89﹣2.85 (6)3.9+0.1﹣3.9+0.1.
10.4+0.6×0.8 (18.7+1.3)×1.4 1.5×2.06﹣0.061.7×4.9+4.9×8.3 39.6﹣9.6÷3 1.2×103