笔算下面各题658+74(验算) 700﹣436(验算) 405×7=48÷9= 132×6= 29÷4=
下面每题,怎样算简便就怎样算 36.8﹣6.8÷0.50.125×32×0.251.25×8.8 73÷4+2.7×0.253.75÷[0.3×(1.34﹣0.84)].
计算,能简算的要简算. 0.32×2.5×12.53.6×0.81+0.36×1.94.05÷[1.8×(3.36﹣2.86)].
计算下面各题,能简算的要简算. 5.95÷(1.2+0.5)×575÷(0.75×4) 0.8×0.68×12573.5×0.1+7.35×9.
计算下面各题,能简算的要简算. 8.5×〔(2.36+2.42)÷0.25〕 3.9÷(1.3+0.6)×6205×99 4.25×6.3+3.7×4.2525.6﹣7.49﹣2.51〔2.5﹣(6.8﹣4.9)〕×0.8.
递等式计算:(能简便计算的用简便方法计算) (1)3.6×1.25+0.32÷0.4 (2)0.45×78.2+20.8×0.45+0.45 (3)14.5+27.3+12.7+45.5 (4)(0.25+0.125)÷(0.75×0.4) (5)6500÷0.125÷0.8 (6)[(3.8﹣2.5)×0.4﹣0.1]÷0.04.