Missing Sequence Terms
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ISEE Lower Level: Quantitative Reasoning › Missing Sequence Terms
What number completes the sequence: 1 4 7 10 __?
11
12
13
14
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of adding 3 to each term. The correct answer is 13 because it continues the pattern of adding 3: 10 + 3 = 13. Choice 12 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding 2 instead of 3. To help students: Practice recognizing arithmetic and geometric patterns. Use number lines to visualize basic sequences.
What number completes the sequence: 4 8 12 16 __?
18
19
20
24
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of adding 4 to each term. The correct answer is 20 because it continues the pattern of adding 4: 16 + 4 = 20. Choice 18 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding 2 instead of 4. To help students: Practice recognizing arithmetic and geometric patterns. Use number lines to visualize basic sequences.
Fill in the blank to continue the sequence: 3 8 13 18 __.
21
22
23
24
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of adding 5 to each term. The correct answer is 23 because it continues the pattern of adding 5: 18 + 5 = 23. Choice 22 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding 4 instead of 5. To help students: Practice recognizing arithmetic and geometric patterns. Use number lines to visualize basic sequences.
What comes next in the pattern: 7 12 10 15 __?
11
12
13
17
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of alternating adding 5 and subtracting 2. The correct answer is 13 because it continues the pattern of subtracting 2 after adding 5: 15 - 2 = 13. Choice 17 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding 2 instead of subtracting. To help students: Practice recognizing arithmetic and geometric patterns. Encourage breaking down sequences into smaller, manageable parts.
Identify the missing term in the series: 3 6 12 __.
12
15
18
24
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of multiplying by 2 each time. The correct answer is 24 because it continues the pattern of multiplying by 2: 12 × 2 = 24. Choice 18 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding instead of multiplying. To help students: Practice recognizing arithmetic and geometric patterns. Encourage breaking down sequences into smaller, manageable parts.
What comes next in the pattern: 9 18 16 32 __?
14
30
34
64
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of alternating multiplying by 2 and subtracting 2. The correct answer is 30 because it continues the pattern of subtracting 2 after multiplying by 2: 32 - 2 = 30. Choice 64 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of multiplying by 2 again instead of subtracting. To help students: Practice recognizing arithmetic and geometric patterns. Encourage breaking down sequences into smaller, manageable parts.
Fill in the blank to continue the sequence: 9 14 19 24 __.
27
28
29
30
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of adding 5 to each term. The correct answer is 29 because it continues the pattern of adding 5: 24 + 5 = 29. Choice 28 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding 4 instead of 5. To help students: Practice recognizing arithmetic and geometric patterns. Use number lines to visualize basic sequences.
What number completes the sequence: 8 13 18 23 __?
26
27
28
29
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of adding 5 to each term. The correct answer is 28 because it continues the pattern of adding 5: 23 + 5 = 28. Choice 27 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding 4 instead of 5. To help students: Practice recognizing arithmetic and geometric patterns. Use number lines to visualize basic sequences.
What comes next in the pattern: 18 12 20 14 __?
15
16
21
22
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of alternating subtracting 6 and adding 8. The correct answer is 22 because it continues the pattern of adding 8 after subtracting 6: 14 + 8 = 22. Choice 21 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding 7 instead of 8. To help students: Practice recognizing arithmetic and geometric patterns. Encourage breaking down sequences into smaller, manageable parts.
Identify the missing term in the series: 5 10 20 __.
20
25
30
40
Explanation
This question tests ISEE Lower Level quantitative reasoning skills: finding a missing term in a sequence. Understanding sequences involves identifying the pattern that determines each term. In this question, the sequence follows a pattern of multiplying by 2 each time. The correct answer is 40 because it continues the pattern of multiplying by 2: 20 × 2 = 40. Choice 30 is incorrect because it fails to apply the pattern consistently and demonstrates a common error of adding instead of multiplying. To help students: Practice recognizing arithmetic and geometric patterns. Encourage breaking down sequences into smaller, manageable parts.