小朋友们在游乐园玩碰碰车,每辆车可以坐2个人,4辆车可以坐几个人?
计算下列各题:(1)4×0.8×2.5×12.5 (2)21﹣×(3) (4).
脱式计算能简算的要简算1.28+9.8+7.72+10.2 ×+× ×[﹣(+) (80﹣9.8)×0.6﹣2.1.
下面各题怎样算简便就怎样算1.7+5.02+3.98 6÷﹣÷6 ×﹣÷133.5×98+35×0.2 3.35×99×2+6.7 ×[÷(﹣)].
下面各题怎样算简便就怎样算 3.6×98+36×0.2 9.57﹣(2.57+3.38)﹣2.62.
(1)14﹣6.46﹣3.54= (2)4.2÷1.5﹣1.5×0.6= (3)(4﹣3)÷(+)=(4)51.6÷[(3﹣1.25)×]= (5)(0.92+)÷(4﹣2)= (6)(5﹣1.8)÷[(1.15+)×1]=