Easy
2
+4
HALVE
+8
×5
−1
÷3
+17
÷5
+2
Medium
17
+1
÷2
+3
×1/3
DOUBLE
SQUARE
HALVE
−11
×6
Hard
89
−5
÷6
SQUARE
×25%
×3
−13
HALVE
−2
÷5
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).