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덧셈 2자리 X 2자리

	5	5
	5	7
1	1	2

	3	4
	8	4
1	1	8

		2	7
		2	1
		4	8

		1	1
		6	1
		7	2

		1	6
		2	5
		4	1

		4	6
		4	3
		8	9

	4	8
	6	3
1	1	1

		1	5
		4	5
		6	0

		2	8
		3	8
		6	6

		3	4
		1	2
		4	6

		1	6
		8	2
		9	8

	6	1
	4	0
1	0	1

	7	6
	4	2
1	1	8

	9	3
	2	5
1	1	8

		2	5
		1	0
		3	5