Easy
3
SQUARE
×5
−15
÷2
−6
×7
+17
HALVE
+12
Medium
29
×5
−4
DOUBLE
−2
×5/8
+5
×2/9
−14
×3
Hard
15
+3
÷6
CUBE
+5
×3/8
−2
×3/5
SQUARE
×25%
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).