笔算下面各题,带△的要验算.836÷4= 183÷5= △609÷3= △507÷8=
能简算的要简算.(1)×3.5+5.5×80%+0.8 (2)(8.8﹣23.4×)÷(3)5.04×6.5+35×0.504 (4)÷(+×)
计算,能简算的要简算÷(+)× 3×7.4﹣3+3.6×3.125 42÷7 52.75﹣﹣9.625.
简便计算.125×32×25 0.53×6.7+5.3×0.43﹣0.53 (×)×(12×17)
直接写出得数.56+28= = = 0.32= =1.6﹣0.7= 4÷7= ﹣= ×8= ﹣﹣=
简便计算.++ 1.25×8.8 2.5×37+6.3×25.