0.5+=
12÷18=
1.45+6.7=
8×0.125=
23=
+=
-=
1+=
+0.2--=
1.5-=
125÷1000=
0.25+=
15÷17=
-(-)=
0.333
125×8= 6.6÷100= 3a+a= 33= 1.8+1.8×9=
1÷0.25= 2.6×1000= 2.4×0×2.4= 101×25= 63÷7÷9=
+ = 1- = + =
- = - = - =
7÷9= += -= +0.6=
+= -= += 0.32=