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뺄셈 2자리 - 1자리

		2	5
			4
		2	1

		2	5
			5
		2	0

		6	8
			7
		6	1

		1	6
			1
		1	5

		8	6
			2
		8	4

		3	4
			1
		3	3

		1	0
			2
			8

		3	8
			2
		3	6

		4	0
			1
		3	9

		2	9
			4
		2	5

		2	6
			5
		2	1

		6	6
			3
		6	3

		8	3
			3
		8	0

		5	3
			4
		4	9

		2	8
			6
		2	2