Math 8 · Unit 9: Sequences and functions · Cambridge Lower Secondary Maths Stage 8

Questions

1. 1. nth term of 5, 8, 11, 14?

   • n + 3
   • 3n + 2
   • 5n + 3
   • 3n + 5
   Check

2. 2. nth term of 7, 11, 15, 19?

   • 4n + 7
   • n + 4
   • 7n + 4
   • 4n + 3
   Check

3. 3. nth term of 20, 17, 14, 11?

   • 20 − 3n
   • 23 − 3n
   • 3n + 17
   • 3n − 23
   Check

4. 4. nth term of 2, 4, 6, 8?

   • 2n + 2
   • n + 2
   • n²
   • 2n
   Check

5. 5. nth term of 1, 6, 11, 16?

   • 5n − 1
   • n + 5
   • 5n + 1
   • 5n − 4
   Check

6. 6. nth term of 10, 20, 30, 40?

   • 10n
   • 10 + n
   • 10n + 10
   • n + 10
   Check

7. 7. Matchsticks: 1 square uses 4, 2 squares use 7, 3 use 10. nth term?

   • n + 3
   • 3n + 1
   • 4n
   • 3n + 4
   Check

8. 8. nth term of −1, 1, 3, 5?

   • 2n − 3
   • 2n + 1
   • 2n − 1
   • n − 2
   Check

9. 9. nth term of 0.5, 1, 1.5, 2?

   • 0.5n
   • 0.5n + 0.5
   • 2n
   • n + 0.5
   Check

10. 10. The coefficient of n in a linear nth term equals …

    • the first term
    • the number of terms
    • the common difference
    • the last term
    Check

11. 11. nth term of 9, 14, 19, 24?

    • 9n + 5
    • 5n + 9
    • 4n + 5
    • 5n + 4
    Check

12. 12. nth term of 12, 10, 8, 6?

    • 14 − 2n
    • 2n + 10
    • 12 − 2n
    • 10 − 2n
    Check

13. 13. nth term of 3, 3, 3, 3?

    • 3
    • n + 3
    • 0n + 1
    • 3n
    Check

14. 14. nth term of 100, 95, 90, 85?

    • 95 − 5n
    • 100 − 5n
    • 105 − 5n
    • 5n + 95
    Check

15. 15. nth term of 4, 13, 22, 31?

    • 9n + 4
    • 9n − 4
    • 4n + 9
    • 9n − 5
    Check