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덧셈 2자리 X 2자리

		3	8
		6	0
		9	8

		1	2
		2	8
		4	0

		4	8
		2	3
		7	1

	7	1
	7	8
1	4	9

	2	8
	7	4
1	0	2

		4	5
		2	4
		6	9

		2	4
		3	8
		6	2

	7	2
	6	1
1	3	3

		4	7
		2	0
		6	7

	7	9
	4	2
1	2	1

	8	4
	3	6
1	2	0

	9	4
	5	4
1	4	8

	6	5
	9	5
1	6	0

		3	0
		3	2
		6	2

	6	2
	6	7
1	2	9