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뺄셈 2자리 - 1자리

		2	1
			9
		1	2

		2	5
			5
		2	0

		1	8
			3
		1	5

		1	8
			6
		1	2

		3	3
			8
		2	5

		7	3
			1
		7	2

		1	3
			2
		1	1

		5	3
			5
		4	8

		4	4
			3
		4	1

		3	5
			6
		2	9

		4	2
			6
		3	6

		2	8
			8
		2	0

		1	5
			4
		1	1

		6	0
			2
		5	8

		5	0
			8
		4	2