4.5×0.2= 1.9×0.01= 0.36÷0.04 5.5÷5=
80×0.5= 7.2÷0.8= 6.3+0.5= 1÷0.2=
2×= 16
4×=16
8×=16
16×=16
18÷1= 18
18÷=9
18÷=6
18÷=3
2.3+3.5= 6×2.5= += 1=
-= 12.6﹣2.6= 200﹣102= 0÷0.5=
= =0.25×0.4= 12.6÷0.2=