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뺄셈 2자리 - 1자리

		2	5
			4
		2	1

		3	6
			2
		3	4

		4	2
			2
		4	0

		2	3
			8
		1	5

		2	8
			2
		2	6

		6	2
			2
		6	0

		4	7
			2
		4	5

		4	7
			4
		4	3

		2	9
			6
		2	3

		5	9
			5
		5	4

		7	4
			1
		7	3

		9	4
			4
		9	0

		9	3
			9
		8	4

		1	8
			9
			9

		2	9
			9
		2	0