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Name Subject Level Section Exercise Lesson
Sample User Math 1 Patterns and Sequences Find a missing number from 20 down to 0 165

You have 20 minutes to finish this exercise
Name	Subject	Level	Section	Exercise	Lesson
Sample User	Math	1	Patterns and Sequences	Find a missing number from 20 down to 0	165

Click on the appropriate choice. When done, click on the submit button.
Find the missing number.
	16	15	14
17	16	15
	14	13	12
19	18		16
7		5	4
	3	2	1
6		4	3
8		6	5
18	17		15
18	17	16
9	8	7
4	3		1
8	7	6
14		12	11
5	4	3
20		18	17
19	18	17
	9	8	7
5		3	2
	5	4	3
15	14		12
15	14	13
14	13	12
7	6		4
8	7		5
16	15	14
	4	3	2
6	5		3
14	13		11
15		13	12
16	15		13
17		15	14
9		7	6
10	9	8
4	3	2
	13	12	11
18		16	15
	15	14	13
16		14	13
	18	17	16
	6	5	4
	7	6	5
9	8		6
20	19		17
10		8	7
4		2	1
20	19	18
5	4		2
	8	7	6
17	16		14
	17	16	15
10	9		7
19		17	16
7	6	5
	19	18	17
6	5	4

Find the missing number.
	16	15	14
17	16	15
	14	13	12
19	18		16
7		5	4
	3	2	1
6		4	3
8		6	5
18	17		15
18	17	16
9	8	7
4	3		1
8	7	6
14		12	11
5	4	3
20		18	17
19	18	17
	9	8	7
5		3	2
	5	4	3
15	14		12
15	14	13
14	13	12
7	6		4
8	7		5
16	15	14
	4	3	2
6	5		3
14	13		11
15		13	12
16	15		13
17		15	14
9		7	6
10	9	8
4	3	2
	13	12	11
18		16	15
	15	14	13
16		14	13
	18	17	16
	6	5	4
	7	6	5
9	8		6
20	19		17
10		8	7
4		2	1
20	19	18
5	4		2
	8	7	6
17	16		14
	17	16	15
10	9		7
19		17	16
7	6	5
	19	18	17
6	5	4

Find the missing number.
	16	15	14
17	16	15
	14	13	12
19	18		16
7		5	4
	3	2	1
6		4	3
8		6	5
18	17		15
18	17	16
9	8	7
4	3		1
8	7	6
14		12	11
5	4	3
20		18	17
19	18	17
	9	8	7
5		3	2
	5	4	3
15	14		12
15	14	13
14	13	12
7	6		4
8	7		5
16	15	14
	4	3	2
6	5		3
14	13		11
15		13	12
16	15		13
17		15	14
9		7	6
10	9	8
4	3	2
	13	12	11
18		16	15
	15	14	13
16		14	13
	18	17	16
	6	5	4
	7	6	5
9	8		6
20	19		17
10		8	7
4		2	1
20	19	18
5	4		2
	8	7	6
17	16		14
	17	16	15
10	9		7
19		17	16
7	6	5
	19	18	17
6	5	4

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Questionnaire

Find the missing number.
	16	15	14
17	16	15
	14	13	12
19	18		16
7		5	4
	3	2	1
6		4	3
8		6	5
18	17		15
18	17	16
9	8	7
4	3		1
8	7	6
14		12	11
5	4	3
20		18	17
19	18	17
	9	8	7
5		3	2
	5	4	3
15	14		12
15	14	13
14	13	12
7	6		4
8	7		5
16	15	14
	4	3	2
6	5		3
14	13		11
15		13	12
16	15		13
17		15	14
9		7	6
10	9	8
4	3	2
	13	12	11
18		16	15
	15	14	13
16		14	13
	18	17	16
	6	5	4
	7	6	5
9	8		6
20	19		17
10		8	7
4		2	1
20	19	18
5	4		2
	8	7	6
17	16		14
	17	16	15
10	9		7
19		17	16
7	6	5
	19	18	17
6	5	4