Easy
17
−3
HALVE
+5
÷6
+1
×9
+3
÷5
−1
Medium
53
DOUBLE
+6
÷7
+5
×3/7
−3
SQUARE
HALVE
−4
Hard
94
−10
×2/3
HALVE
×31/4
+9
×25%
×2
×80%
+47
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