Easy
6
−1
×5
−16
×9
−17
HALVE
−12
÷2
+17
Medium
34
−1
×1/3
SQUARE
−18
DOUBLE
−2
÷3
−5
×3/7
Hard
106
−6
×3/5
×90%
×2
×25%
+5
÷8
CUBE
+1
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).