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뺄셈 2자리 - 1자리

		2	7
			7
		2	0

		4	1
			2
		3	9

		5	9
			8
		5	1

		2	7
			3
		2	4

		4	0
			5
		3	5

		2	4
			4
		2	0

		1	2
			2
		1	0

		3	4
			3
		3	1

		6	5
			1
		6	4

		5	6
			8
		4	8

		3	5
			9
		2	6

		9	1
			4
		8	7

		7	2
			1
		7	1

		6	2
			3
		5	9

		5	0
			3
		4	7