8×45= 63×4= 8×26= 5×23=5×43= 9×28= 80×5= 6×95=33×3= 214×5= 45×4= 800×4=24×6= 4×70=
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×=
÷3= ； 3×
÷
= ；
= ； 9×
= ； 4÷
= ；
﹣
×
= ．
÷
=
÷
= 40×
=
÷
=
×12=
×
=
×201﹣
÷
=
÷5.25=
+6.25= 0.74×100= 742+258= 7×
÷7×
= 10﹣3.2﹣5.8=
=
=
÷2= 4÷
=
﹣
=
÷
= 4﹣
﹣
= 0÷
+
×0+9=
×14= 20÷
= 1﹣
÷
=
﹣
﹣
= 2.4÷40%=
﹣
﹣
÷6×
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