Easy
9
−3
×2
−4
SQUARE
−14
HALVE
−1
÷3
+12
Medium
11
+5
÷8
+6
×1/2
×7
−4
×2/3
−7
×2
Hard
56
×25%
+2
÷8
+10
×2/3
CUBE
+1
÷3
+23
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).