Easy
14
−5
SQUARE
−18
÷7
−1
×5
−10
HALVE
+19
Medium
45
−18
×5
×1/3
−16
DOUBLE
+2
÷3
−6
×4
Hard
83
×2
−10
×5/13
×10%
SQUARE
+4
×22/5
HALVE
+15
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).