菜场运来黄瓜250千克,运来黄瓜比西红柿少,运来西红柿和黄瓜共多少千克?
递等式计算,能简算的就简算.(1)18.23﹣8.39+11.77(2)0.539+12.25﹣0.039(3)5×1.2÷5×1.2(4)8.5×10.1(5)50.3×0.6﹣0.6(6)0.25×23.9×0.4(7)9.3+9.3×6.3+9.3×2.7(8)0.53×(9.25﹣8.96)
32÷4+2.5÷2.8(1.75×3+1.75)×2.50.1×0.1÷(0.2+0.1﹣0.2+0.1)0.08×2.7+0.08×6.3+0.08(4.6÷0.2+0.8)×1.02[(1.2﹣0.78)÷0.12+0.65]×0.8.
计算下面各题,能简算的要简算.6.12÷8.5﹣0.58= 2.8×0.5+0.5×27.3=0.25×39+0.25= 0.75×1.8÷0.15=
想一想算一算,能用简便计算的用简便计算.0.25×8×125×4 9.8×25 [16.7﹣(6.2+9.5)]×8.3 0.9×99+0.9.
2.9×1.4+2.9×1.630.8÷[14﹣(9.85+1.07)].