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Grade 8 · CogAT

Grade 8 CogAT: Quantitative

1.

62, 59, 56, ___. What is the next term?

2.

Choose the number that belongs in the blank.

3.

12 is to 48 as 7 is to ____. Which number completes the analogy?

4.

6 is to 36 as 13 is to ____. Which number completes the analogy?

5.

15 is to 61 as 9 is to ____. Which number completes the analogy?

6.

5 is to 125 as 4 is to ____. Which number completes the analogy?

7.

Which number makes this true? __ ÷ 7 = 20

8.

Find the pattern of the rows in the table. Which number is missing?

9.

Which number makes this true? 8 × __ = 72

10.

Which number makes this true? 11 × __ = 99

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Answer key

Grade 8 CogAT: Quantitative

Question numbers match the worksheet.

  1. 1.A) 53Subtract 3 each time.
  2. 2.D) 17Subtract 5 each time.
  3. 3.A) 28Multiply by 4. 12 is to 48, so 7 is to 28.
  4. 4.A) 169Square each number. 6 is to 36, so 13 is to 169.
  5. 5.B) 37Multiply by 4, then add 1. 15 is to 61, so 9 is to 37.
  6. 6.D) 64Cube each number. 5 is to 125, so 4 is to 64.
  7. 7.C) 140140 ÷ 7 = 20.
  8. 8.A) 4Each row uses two steps: multiply by 4, then divide by 3, and repeat.
  9. 9.B) 98 × 9 = 72.
  10. 10.D) 911 × 9 = 99.

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