直接写出得数.①= ②= ③= ④=⑤= ⑥= ⑦= ⑧=⑨= ⑩1÷6÷3=
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+19⑤25×32×125⑥9.63﹣(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)×1.41.5×2.06﹣0.06 1.7×4.9+4.9×8.339.6﹣9.6÷31.2×103
算一算,能简算的要简算. (1)5.42×99(2)1.43×2.5+0.57×2.5 (3)0.93÷0.6÷0.5(4)6.8×25+0.32×4.2﹣8÷25.