Easy
7
−1
SQUARE
−18
÷6
+2
×5
+19
HALVE
−3
Medium
24
×2/3
−6
SQUARE
DOUBLE
−18
HALVE
+5
×1/3
−4
Hard
98
HALVE
−1
×41/3
−4
×25%
+9
÷12
CUBE
+49
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).