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Class 6 Maths — Factors and multiples

Find factors and multiples, use divisibility tests, and tell a prime number from a composite one.

Name: ________________________

Before you start

Every mark on this line is a multiple of 3. Move along them and see how many you already know from the 3 times table.

061218243036

The line could carry on for ever, because a number has no last multiple. Factors go the other way: 36 has exactly nine of them and then they run out.

  1. 1.Exactly one number on this line is a multiple of 6. Tap it.

    Mark the line with an X.

    20212223242526272829

  2. 2.Put these numbers in order by how many factors they have, fewest first.

    • 16
    • 9
    • 12
    • 8
    • 13

  3. 3.How many prime numbers are there between 10 and 20?

  4. 4.What is the fourth number in the seven times table?

  5. 5.Which of these numbers is prime?

    • a) 39
    • b) 29
    • c) 91
    • d) 49

  6. 6.What is the smallest prime number?

  7. 7.Match each number to how many factors it has.

    • 7
    • 8
    • 16
    • 12
    • 36
    • 2
    • 4
    • 5
    • 6
    • 9

  8. 8.What is the largest factor of 45, apart from 45 itself?

Answer key — Class 6 Maths — Factors and multiples

  1. 1. 24
  2. 2. 1. 13 2. 9 3. 8 4. 16 5. 12
  3. 3. 4
  4. 4. 28
  5. 5. b) 29
  6. 6. 2
  7. 7. 7 → 2; 8 → 4; 16 → 5; 12 → 6; 36 → 9
  8. 8. 15