Easy
13
−5
HALVE
+1
SQUARE
+2
÷9
+12
×4
−12
Medium
55
+5
÷6
SQUARE
DOUBLE
+7
×7/9
−1
×1/4
HALVE
Hard
18
−2
÷8
CUBE
SQUARE
+2
×11/3
×2
+42
HALVE
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).