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뺄셈 2자리 - 1자리

		2	1
			9
		1	2

		5	2
			4
		4	8

		3	1
			8
		2	3

		3	0
			6
		2	4

		1	7
			2
		1	5

		4	0
			5
		3	5

		9	4
			1
		9	3

		9	5
			1
		9	4

		2	5
			9
		1	6

		3	0
			2
		2	8

		2	7
			6
		2	1

		1	5
			7
			8

		6	0
			2
		5	8

		6	2
			5
		5	7

		1	6
			6
		1	0