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

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

    • 13
    • 16
    • 12
    • 9
    • 8

  3. 3.Which of these numbers is prime?

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

  4. 4.What is the smallest prime number?

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

  6. 6.Which number between 20 and 30 is a multiple of 9?

  7. 7.Sort each number by whether it is prime or composite.

    Groups: Prime · Composite

    • 27
    • 17
    • 31
    • 23
    • 21
    • 33

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

    Mark the line with an X.

    20212223242526272829

Answer key — Year 6 Maths — Factors and multiples

  1. 1. 28
  2. 2. 1. 13 2. 9 3. 8 4. 16 5. 12
  3. 3. c) 29
  4. 4. 2
  5. 5. 15
  6. 6. 27
  7. 7. 17 → Prime; 21 → Composite; 23 → Prime; 27 → Composite; 31 → Prime; 33 → Composite
  8. 8. 24