The Greatest Common Factor

Read this text. Pay close attention to the section, "A Method for Determining the Greatest Common Factor". Complete the practice questions and check your answers.

Practice

Practice Set A


Find the GCF of the following numbers.

  1. 24 and 36
  2. 48 and 72
  3. 50 and 140
  4. 21 and 225
  5. 450, 600, and 540

Exercises

For the following problems, find the greatest common factor (GCF) of the numbers.

  1. 6 and 8
  2. 5 and 10
  3. 8 and 12
  4. 9 and 12
  5. 20 and 24
  6. 35 and 175
  7. 25 and 45