Easy
10
−4
×3
+1
×4
+5
÷9
−2
SQUARE
+9
Medium
55
+5
×1/2
−3
×6
×2/3
DOUBLE
+1
÷7
−4
Hard
105
−9
÷12
SQUARE
×41/2
+2
÷5
−16
HALVE
+46
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