Easy
8
−2
HALVE
SQUARE
+5
×2
−4
÷8
+9
×7
Medium
45
−11
DOUBLE
−5
÷7
+5
×3/7
×3
−2
HALVE
Hard
41
+3
÷11
CUBE
+6
×3/5
−4
HALVE
+1
×41/2
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).