直接写出得数 54+38= 125﹣25= 630÷7= 0×56= 630﹣70=0÷5= 40×14= 200÷5= 25×8= 54÷9=50×40= 46+117= 660÷3= 39×2= 33×30=400÷8= 400+350= 12×30= 1200﹣500= 408÷4=
直接写得数+=﹣=×=×5= 2﹣= 3÷7=÷=÷4=
直接写出得数．+﹣×6×24× 5÷4.8 （+）×6 9×0+（+）÷ 12×11×× 1.5﹣+﹣．
直接写出得数． 1÷= 1﹣﹣=×==×12=（3+）×0=÷=+=
计算：﹣= 18×===×12=÷2=+=﹣=
===================== 2.5×16======== 1.5÷0.05== 1.5÷0.05==== 2.5×0.4============ 6.25+1.75===============
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