Easy
16
−9
SQUARE
+9
HALVE
−14
×2
+6
÷9
+13
Medium
48
×3
×2/3
×2
−4
DOUBLE
×1/4
HALVE
−1
÷2
Hard
115
+13
×25%
+8
÷10
×11/4
+3
×11/2
HALVE
−1
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).