10+	48*		2/	15*
		7+		13+	13+
	9+
11+		18+
				7+
	11+		3*

Difficulty: Impossible ()

2-	120*		2-	20+	30*
	5+
		11+
45*				2	14+
			8+	6
1-

Difficulty: Medium ()

1-	5-	12*	3/		12+
			13+
30*
	60*	6+			12+
1-				13+
	12*

Difficulty: Medium ()

3-		40*			450*
12*			4-
8*		1
1200*		6*		1-
		15*		4*	24*
	1	6*

Difficulty: Medium ()