-5%
-10%
-12%
-15%
-20%
-25%
-30%
-35%
-40%
-50%
-55%
-60%
-75%
-80%
-90%
7
8
9
÷
±
4
5
6
×
√
1
2
3
–
%
0
.
C
+
=