Prime Factors, Highest Common Factors and Lowest Common Multiples

4 Responses | Created by Harman14 |

If you think you understand this topic thoroughly, see how well you do in this quiz! After you have finished, review the questions you got wrong and work out which areas you need to focus on most.

  1. 1

    Write 72 as a product of its prime factors.

  2. 2

    Write 98 as a product of its prime factors.

  3. 3

    Write 265 as a product of its prime factors.

  4. 4

    Find the HCF of 50 and 200.

  5. 5

    Find the HCF of 90 and 230.

  6. 6

    Find the LCM of 120 and 300.

  7. 7

    Find the LCM of 90 and 150.

  8. 8

    Find the HCF of 30, 40 and 50.

  9. 9

    Find the LCM of 145, 176 and 200.

  10. 10

    What number is written as a product of its prime factors like this?: 13 x 5 x 5

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