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GCF 1
GCF2
Prime or Composite
Prime Factorization
Advanced GCF!
100
Greatest Common Factor of 6 and 18
What is 6
100
Greatest Common factor of 20 and 50
What is 10
100
81
What is Composite
100
Prime Factorization of 12
What is 2 x 2 x 3
100

What's the GCF of 27 and 45?

What is 9

200
Greatest Common Factor of 2 and 24
What is 2
200
Greatest Common Factor of 24 and 88
What is 8
200
91
What is Composite
200
Prime Factorization of 48
What is 2 x 2 x 2 x 2 x 3
200

What's the GCF of 30 and 48?

What is 6

300
GCF of 5 and 15
What is 5
300
the greatest common factor of 12 and 48
What is 12
300
101
What is prime
300
Prime Factorization of 54
What is 2 x 3 x 3 x 3
300

What is the GCF of 28 and 48?

What is 4

400
GCF of 12 and 20
What is 4
400
Greatest common factor of 30 and 90?
What is 30
400
2
What is Prime
400
Prime Factorization of 120
What is 2 x 2 x 2 x 3 x 5
400

What is the GCF of 16, 32, and 72?

What is 8

500
GCF of 7 and 21
What is 7
500
Greatest common factor of 75 and 100
What is 25
500
287
What is composite
500
Prime Factorization of 84
What is 2 x 2 x 3 x 7
500

What is the GCF of 96, 120, and 156?

What is 12