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뺄셈 2자리 - 1자리

		2	8
			1
		2	7

		4	3
			7
		3	6

		2	3
			1
		2	2

		6	3
			1
		6	2

		3	7
			7
		3	0

		1	0
			1
			9

		2	0
			8
		1	2

		4	9
			8
		4	1

		4	2
			6
		3	6

		6	3
			3
		6	0

		4	3
			4
		3	9

		4	2
			2
		4	0

		4	0
			5
		3	5

		3	1
			2
		2	9

		2	9
			4
		2	5