+= += ﹣=﹣= 1+= +=﹣= += +=﹣= += 1﹣=﹣= += +=62= 53= 0.125×8=6.25×13= 28÷56=
+6.28+﹣4.28.
神机妙算细又巧!(写出简算过程)×9+ (+)×15×17 ×12﹣÷ ×+×+.
×3.6+×0.75.
脱式计算.能简算的要简算1.26÷0.4÷31.5 18﹣(+)×105 1.25×32×0.25.
3.7×0.172+0.37×8.28.