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덧셈 2자리 X 2자리

		2	7
		5	7
		8	4

		1	9
		7	2
		9	1

		6	8
		2	5
		9	3

		2	7
		5	2
		7	9

		1	2
		8	0
		9	2

		3	7
		5	4
		9	1

		4	1
		2	1
		6	2

		6	6
		1	2
		7	8

		6	3
		2	4
		8	7

	2	7
	8	3
1	1	0

	9	3
	3	6
1	2	9

		1	2
		6	4
		7	6

		2	7
		2	3
		5	0

		3	9
		5	4
		9	3

		3	8
		5	5
		9	3