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뺄셈 2자리 - 1자리

		2	0
			9
		1	1

		5	7
			9
		4	8

		2	8
			4
		2	4

		5	6
			6
		5	0

		1	0
			6
			4

		3	4
			6
		2	8

		8	6
			2
		8	4

		2	5
			1
		2	4

		5	2
			1
		5	1

		1	9
			5
		1	4

		1	0
			1
			9

		1	7
			6
		1	1

		2	8
			8
		2	0

		5	5
			9
		4	6

		1	6
			9
			7