+ = ×14= × = × ÷ =
0.75+ = 6÷ = ÷ = ×0÷ =
x÷0.2=7.2 △2x-3.42=6.4
138-x=57 4x+6x=18
+=
-=
2.4–=
1-=
1--=
++=
1- = - = + = - =
+ = + = - = + =
- = + = - = 1- + =
10﹣6.8= ﹣ = 35×1%= 1.25×24= 5× ÷5× =
0.42= 10÷0.02= 5a×7a= 1÷3= 1﹣1÷6=
x
10
15
y
12