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뺄셈 2자리 - 1자리

		1	9
			7
		1	2

		5	3
			2
		5	1

		2	6
			7
		1	9

		1	2
			8
			4

		4	0
			9
		3	1

		3	0
			7
		2	3

		4	0
			3
		3	7

		6	9
			9
		6	0

		3	4
			3
		3	1

		9	5
			4
		9	1

		2	6
			1
		2	5

		4	5
			4
		4	1

		6	2
			3
		5	9

		5	5
			7
		4	8

		4	5
			6
		3	9