Easy
6
HALVE
+5
SQUARE
+1
÷5
−4
×5
−1
÷2
Medium
49
DOUBLE
−8
÷9
−2
HALVE
SQUARE
−1
×3/5
×9
Hard
124
HALVE
−2
×3/4
÷5
√
+1
×31/2
+12
÷13
There are two versions that can be printed, a default one, and one that requires less ink (no objectives or rules, and no lines).