Easy
5
+6
×7
+1
HALVE
−1
÷2
−12
×5
+18
Medium
48
−3
×1/5
−1
DOUBLE
+4
×3/5
SQUARE
−4
HALVE
Hard
17
SQUARE
−1
÷4
+6
×9/13
HALVE
−3
×5/12
×3
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).
default less ink printing help