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Grade 6 · CogAT

Grade 6 CogAT: Quantitative · Number series

1.

Each row and each column follows a number rule. Which number belongs in the empty cell?

2.

2, 8, 32, ___. What is the next term?

3.

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

4.

Which number comes next in this series?

5.

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

6.

Which number comes next in this series?

7.

Choose the number that belongs in the blank.

8.

Choose the number that belongs in the blank.

9.

9, 18, 27, 45, ___. What is the next term?

10.

79, 75, 71, ___. What is the next term?

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Answer key

Grade 6 CogAT: Quantitative · Number series

Question numbers match the worksheet.

  1. 1.B) 27Each cell is the row number times the column number times 3.
  2. 2.C) 128Multiply by 4 each time.
  3. 3.A) 25Each row uses two steps: multiply by 4, then add 5, and repeat.
  4. 4.C) 23Add 7 each time, starting from a negative number.
  5. 5.D) 8Each row uses two steps: multiply by 4, then divide by 3, and repeat.
  6. 6.D) 231Multiply by 3, then subtract 10, and repeat.
  7. 7.C) 29Subtract 10 each time.
  8. 8.C) 16Subtract 10 each time.
  9. 9.C) 72Add the two terms before it.
  10. 10.D) 67Subtract 4 each time.

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