用竖式计算:46+28+23= ;82﹣37﹣12= .
计算下面各题,能简算的要简算.(1)(2)12(3)(4)(5)(6)2.
1+0.5%= 0.8﹣= 0.5﹣= = 365﹣199= = 3×= = =
270×0.4×2×2.5×0.5 95×38+62÷.
口算题= = = 10%+0.9= 7﹣7÷8=7﹣7÷8= 79×99= 4÷7+3÷7= 6.8×= ==
能简算的要简算:(1)(25×4﹣12.5)×8 (2)÷6+×(3)×0.75+× (4)4﹣[3.75×(1.2﹣)+].