Easy
9
−2
SQUARE
+13
HALVE
−4
÷3
+4
×3
+1
Medium
30
HALVE
−3
×2/3
×2
+5
×2/7
−1
SQUARE
DOUBLE
Hard
22
×3
+4
×5/7
÷5
×80%
HALVE
CUBE
×2
+19
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).