巧算.8×3+3×2 187﹣65﹣87456+145+244 1000﹣685﹣115540﹣157+460 39×8.
能简算的就简算. 0.25×+2.5% 9.6﹣11÷7+×4 5.125×+2.875÷4.
脱式计算,能简算的要写出简算过程.(8﹣10×)÷ 19﹣19×﹣0.8+ 35÷.
脱式计算,能简算的要简算.(1)(2)2.5×0.875+0.25×1.25(3)(4).
脱式计算.()×0.25 [3.6﹣(1.6+)﹣]××[﹣(﹣0.25)] (1+)×(1+)×(1+)×(1+)×(1+)
计算:①+﹣= ②3.2﹣0.85﹣1= ③3.2×﹣÷2= ④1.725×4×0.5=⑤(+)÷= ⑥1.8×0.72+1.28×1.8= ⑦2÷(﹣)= ⑧57.6÷[(1.25+25%)×0.32]=.