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뺄셈 2자리 - 1자리

		2	8
			9
		1	9

		2	8
			8
		2	0

		6	0
			2
		5	8

		3	8
			4
		3	4

		8	7
			2
		8	5

		8	1
			1
		8	0

		2	5
			5
		2	0

		6	0
			5
		5	5

		8	8
			4
		8	4

		9	3
			5
		8	8

		7	5
			3
		7	2

		9	5
			3
		9	2

		5	2
			6
		4	6

		2	7
			2
		2	5

		8	1
			2
		7	9