Easy
19
−12
×9
−6
÷3
+5
÷6
SQUARE
−8
HALVE
Medium
28
HALVE
+4
×1/6
×5
−3
DOUBLE
−17
SQUARE
×3
Hard
40
×3/5
−4
÷5
√
CUBE
SQUARE
+6
×2/7
−10
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).