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ReasoningAges 10-12

Number patterns

Find the addition rule in a number sequence and use it to complete the next term. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 10-12

Number patterns

Take your time. Show your thinking.

1. What comes next? 12, 27, 42, 57, ____
2. What comes next? 11, 18, 25, 32, ____
3. What comes next? 18, 27, 36, 45, ____
4. What comes next? 15, 28, 41, 54, ____
5. What comes next? 13, 25, 37, 49, ____
6. What comes next? 4, 12, 20, 28, ____
7. What comes next? 18, 30, 42, 54, ____
8. What comes next? 11, 25, 39, 53, ____
9. What comes next? 15, 23, 31, 39, ____
10. What comes next? 17, 27, 37, 47, ____
11. What comes next? 14, 25, 36, 47, ____
12. What comes next? 9, 13, 17, 21, ____

12 questions · Seed 114 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 10-12

Number patterns

Answers and reasoning. Review before teaching.

1. What comes next? 12, 27, 42, 57, ____
72
Add 15 each time.
2. What comes next? 11, 18, 25, 32, ____
39
Add 7 each time.
3. What comes next? 18, 27, 36, 45, ____
54
Add 9 each time.
4. What comes next? 15, 28, 41, 54, ____
67
Add 13 each time.
5. What comes next? 13, 25, 37, 49, ____
61
Add 12 each time.
6. What comes next? 4, 12, 20, 28, ____
36
Add 8 each time.
7. What comes next? 18, 30, 42, 54, ____
66
Add 12 each time.
8. What comes next? 11, 25, 39, 53, ____
67
Add 14 each time.
9. What comes next? 15, 23, 31, 39, ____
47
Add 8 each time.
10. What comes next? 17, 27, 37, 47, ____
57
Add 10 each time.
11. What comes next? 14, 25, 36, 47, ____
58
Add 11 each time.
12. What comes next? 9, 13, 17, 21, ____
25
Add 4 each time.

12 questions · Seed 114 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 10-12

Number patterns

Take your time. Show your thinking.

1. What comes next? 12, 27, 42, 57, ____
2. What comes next? 11, 18, 25, 32, ____
3. What comes next? 18, 27, 36, 45, ____
4. What comes next? 15, 28, 41, 54, ____
5. What comes next? 13, 25, 37, 49, ____
6. What comes next? 4, 12, 20, 28, ____
7. What comes next? 18, 30, 42, 54, ____
8. What comes next? 11, 25, 39, 53, ____
9. What comes next? 15, 23, 31, 39, ____
10. What comes next? 17, 27, 37, 47, ____
11. What comes next? 14, 25, 36, 47, ____
12. What comes next? 9, 13, 17, 21, ____

12 questions · Seed 114 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 10-12

Number patterns

Answers and reasoning. Review before teaching.

1. What comes next? 12, 27, 42, 57, ____
72
Add 15 each time.
2. What comes next? 11, 18, 25, 32, ____
39
Add 7 each time.
3. What comes next? 18, 27, 36, 45, ____
54
Add 9 each time.
4. What comes next? 15, 28, 41, 54, ____
67
Add 13 each time.
5. What comes next? 13, 25, 37, 49, ____
61
Add 12 each time.
6. What comes next? 4, 12, 20, 28, ____
36
Add 8 each time.
7. What comes next? 18, 30, 42, 54, ____
66
Add 12 each time.
8. What comes next? 11, 25, 39, 53, ____
67
Add 14 each time.
9. What comes next? 15, 23, 31, 39, ____
47
Add 8 each time.
10. What comes next? 17, 27, 37, 47, ____
57
Add 10 each time.
11. What comes next? 14, 25, 36, 47, ____
58
Add 11 each time.
12. What comes next? 9, 13, 17, 21, ____
25
Add 4 each time.

12 questions · Seed 114 · Age guidance, not curriculum certification