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뺄셈 2자리 - 1자리

		2	9
			9
		2	0

		1	1
			7
			4

		4	8
			6
		4	2

		8	9
			5
		8	4

		9	9
			1
		9	8

		5	3
			6
		4	7

		3	4
			4
		3	0

		2	7
			6
		2	1

		2	1
			9
		1	2

		8	1
			1
		8	0

		4	8
			1
		4	7

		3	2
			6
		2	6

		6	3
			2
		6	1

		6	5
			3
		6	2

		6	4
			4
		6	0