Easy
2
+16
HALVE
−3
×2
−4
×7
−11
÷3
−9
Medium
40
HALVE
+1
×5/7
−7
×6
+2
×1/5
×3
−10
Hard
70
÷14
SQUARE
−1
×41/3
+6
×2/5
−2
÷6
CUBE
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).