Name: ________ Date:_________

Finding the unknown value (A16)

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1

2	+	1	1	=
8			5

2

1	2	+	1	=
	3		4

3

	5	+	x	=	7
	6				6

4

x	+	1	=	18
		5		15

5

	4	+	x	=	21
	5		4		20

6

	x	+	2	=	37
	6		5		30