구구단

2단						3단						4단						5단
2	X	1	=	2		3	X	1	=	3		4	X	1	=	4		5	X	1	=	5
2	X	2	=	4		3	X	2	=	6		4	X	2	=	8		5	X	2	=	10
2	X	3	=	6		3	X	3	=	9		4	X	3	=	12		5	X	3	=	15
2	X	4	=	8		3	X	4	=	12		4	X	4	=	16		5	X	4	=	20
2	X	5	=	10		3	X	5	=	15		4	X	5	=	20		5	X	5	=	25
2	X	6	=	12		3	X	6	=	18		4	X	6	=	24		5	X	6	=	30
2	X	7	=	14		3	X	7	=	21		4	X	7	=	28		5	X	7	=	35
2	X	8	=	16		3	X	8	=	24		4	X	8	=	32		5	X	8	=	40
2	X	9	=	18		3	X	9	=	27		4	X	9	=	36		5	X	9	=	45

6단						7단						8단						9단
6	X	1	=	6		7	X	1	=	7		8	X	1	=	8		9	X	1	=	9
6	X	2	=	12		7	X	2	=	14		8	X	2	=	16		9	X	2	=	18
6	X	3	=	18		7	X	3	=	21		8	X	3	=	24		9	X	3	=	27
6	X	4	=	24		7	X	4	=	28		8	X	4	=	32		9	X	4	=	36
6	X	5	=	30		7	X	5	=	35		8	X	5	=	40		9	X	5	=	45
6	X	6	=	36		7	X	6	=	42		8	X	6	=	48		9	X	6	=	54
6	X	7	=	42		7	X	7	=	49		8	X	7	=	56		9	X	7	=	63
6	X	8	=	48		7	X	8	=	56		8	X	8	=	64		9	X	8	=	72
6	X	9	=	54		7	X	9	=	63		8	X	9	=	72		9	X	9	=	81

구구단

2단						3단						4단						5단
2	X	1	=	2		3	X	1	=	3		4	X	1	=	4		5	X	1	=	5
2	X	2	=	4		3	X	2	=	6		4	X	2	=	8		5	X	2	=	10
2	X	3	=	6		3	X	3	=	9		4	X	3	=	12		5	X	3	=	15
2	X	4	=	8		3	X	4	=	12		4	X	4	=	16		5	X	4	=	20
2	X	5	=	10		3	X	5	=	15		4	X	5	=	20		5	X	5	=	25
2	X	6	=	12		3	X	6	=	18		4	X	6	=	24		5	X	6	=	30
2	X	7	=	14		3	X	7	=	21		4	X	7	=	28		5	X	7	=	35
2	X	8	=	16		3	X	8	=	24		4	X	8	=	32		5	X	8	=	40
2	X	9	=	18		3	X	9	=	27		4	X	9	=	36		5	X	9	=	45

6단						7단						8단						9단
6	X	1	=	6		7	X	1	=	7		8	X	1	=	8		9	X	1	=	9
6	X	2	=	12		7	X	2	=	14		8	X	2	=	16		9	X	2	=	18
6	X	3	=	18		7	X	3	=	21		8	X	3	=	24		9	X	3	=	27
6	X	4	=	24		7	X	4	=	28		8	X	4	=	32		9	X	4	=	36
6	X	5	=	30		7	X	5	=	35		8	X	5	=	40		9	X	5	=	45
6	X	6	=	36		7	X	6	=	42		8	X	6	=	48		9	X	6	=	54
6	X	7	=	42		7	X	7	=	49		8	X	7	=	56		9	X	7	=	63
6	X	8	=	48		7	X	8	=	56		8	X	8	=	64		9	X	8	=	72
6	X	9	=	54		7	X	9	=	63		8	X	9	=	72		9	X	9	=	81