Easy
13
−6
SQUARE
−4
÷5
−1
HALVE
+10
×5
+19
Medium
46
−2
÷4
SQUARE
+7
×1/8
−5
×9
−4
×2/5
Hard
80
−11
×2
−3
×2/3
÷9
−4
HALVE
+18
×7
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).