3.6+7.5=
202﹣98=
910÷13=
2.5×0.4=
+=
5-=
÷=
3÷2×=
6﹣0.4=
7.52+2.48=
0.73÷0.1=
0÷×=
15×60=
÷=
4-=
24××
1.5×1= 910÷70= 2.2﹣1.9= 6÷7= 435+199=
+= -= ÷= 20×= ×=
62+48=