小军有79张邮票,小康有41张邮票,小军的邮票大约是小康的多少倍?
直接写得数.÷= ÷5.25= +6.25= 0.74×100=1÷= ×5+×8= 15×(+)=
直接写得数32×= ÷= 99×66+66= 8×98×125= ×(﹣)=398+274= ×÷×= 1×0÷1= ÷= 2÷0.02=
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=