8÷8÷= +0.37= 10﹣1 1﹣9.9% 1:2 99099÷99 +×4 300×0.3% 1%÷10% 0.1×0.01÷0.1.
口算: 18000÷600= ; 3.5﹣0.05= ;÷3= ; 3×÷= ; 10÷= ; 9×= ; 4÷= ;﹣×= .
口算: 2005﹣1998= 1.6×0.05= 5.7÷0.19= 0.125×0.7=÷=÷6=÷= 40×=÷=×12=×=×201﹣=
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×=