Easy
2
+14
×5
−10
÷2
−16
×3
−13
HALVE
+6
Medium
14
−1
×9
−15
÷3
−6
÷7
SQUARE
HALVE
−2
Hard
46
+9
×4/11
−6
×4/7
CUBE
×25%
HALVE
+8
÷9
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).