2.3×1.5+4.5÷0.75 (7.5+2.5)÷0.25
980÷70=
1÷0.01=
10-1.25=
6.3×10%=
16×0.25=
1÷3×=
0.9+99×0.9=
2.5÷=
4×3.14=
43-4.5=
628÷3.14=
4:0.25=
6÷1.5=
0.42:()3=
( ):9=
810÷30= 0.38+3.8= 0.15×0.2=
÷= ﹣×0= ×3÷3×=