根据算式3×4=12圈一圈.
2.25×4= 1.01﹣0.91= 1÷0.01= ÷= ÷5.25=+6.25= 0.74×100= 742+258= 7×÷7×= 10﹣3.2﹣5.8=
直接写出得数.= = ÷2= 4÷= ﹣=÷= 4﹣﹣= 0÷+= ×0+9=
×14= 20÷= 1﹣÷= ﹣﹣= 2.4÷40%=﹣×0= 1÷﹣÷1= 6×÷6×=
看谁算得快.×= ÷= ×8= +=18×2%= 1﹣= 3.5÷18= 137﹣63﹣37=205﹣199+95= 8.8+1.2= 8π≈ 0.33=
直接写结果÷8= ÷= 1÷= (+)×12=××0= 2÷= ×3= ××19=