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C.8

GCF of Three Numbers

Q1 · Sep–Nov

Find the greatest common factor of three numbers.

Level
Medium
Problems
Daniel Math Academy · Grade 6 Math

GCF of Three Numbers

Skill C.8 · Factors, multiples & primes · ★★☆ Medium · Quarter 1

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Find each GCF.

Example

Think: Factors of 12: 1, 2, 3, 4, 6, 12. Of those, 1, 2, 3, and 6 also divide 18 and 30, and the greatest is 6.

  1. 1
    Find the greatest common factor (GCF) of 36, 18, and 54.
  2. 2
    Find the greatest common factor (GCF) of 48, 96, and 84.
  3. 3
    Find the greatest common factor (GCF) of 91, 26, and 78.
  4. 4
    Find the greatest common factor (GCF) of 45, 75, and 60.
Daniel Math Academy · danielmath.comWorksheet #mg78pxm · Page 1 / 2
Daniel Math Academy · Grade 6 Math

Answer Key

C.8 GCF of Three Numbers · ★★☆ Medium

  1. 118
  2. 212
  3. 313
  4. 415
Daniel Math Academy · danielmath.comWorksheet #mg78pxm · Answer Key · Page 2 / 2

C. Factors, multiples & primes11 skills

  1. C.1Divisibility Rules
  2. C.2Prime or Composite
  3. C.3List the Factors
  4. C.4Factor Pairs
  5. C.5Prime Factorization
  6. C.6Prime Factorization with Exponents
  7. C.7Greatest Common Factor
  8. C.8GCF of Three Numbers
  9. C.9Least Common Multiple
  10. C.10LCM of Three Numbers
  11. C.11GCF & LCM
Unit review worksheet (all 11 skills)