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뺄셈 2자리 - 1자리

		2	3
			2
		2	1

		1	4
			2
		1	2

		1	5
			2
		1	3

		3	6
			6
		3	0

		3	2
			2
		3	0

		9	8
			1
		9	7

		3	7
			6
		3	1

		3	0
			9
		2	1

		4	1
			4
		3	7

		2	3
			6
		1	7

		6	1
			7
		5	4

		2	4
			8
		1	6

		4	6
			4
		4	2

		4	2
			1
		4	1

		4	2
			2
		4	0