Name: ________ Date:_________

Finding the unknown value (A18)

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1

1	4	+	1	=
	6		8

2

3	+	5	=
5		6

3

	4	+	x	=	31
	5				20

4

x	+	1	=	17
		3		15

5

	3	+	1	x	=	2	1
	4			4			4

6

	x	+	1	=	3
	2		4		4