Let’s Practice!
Can you find the greatest common factors for numbers between 1 through 25?
Goal:
Goal:
You Can Do It!
Goal: Identify the factors for numbers between 1 through 25 to find the greatest common factor.
What is the greatest common factor of 3 and 12?
A factor rainbow for the number 3. 1st arc 1 and 3 ,
Factor rainbow for the number 12. 1st arc 1 and 12, 2nd
arc 2 and 6 , 3rd arc 3 and 4
- GCF: 1
- GCF: 3
- GCF: 4
- GCF: 6
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
Correct! The GCF is 3.
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
What is the greatest common factor of 10 and 20?
A factor rainbow for the number 10. 1st arc 1 and 10,
2nd arc is 2 and 5 , Factor rainbow for the number 20.
1st arc 1 and 20, 2nd arc 2 and 10 , 3rd arc 4 and
5
- GCF: 2
- GCF: 10
- GCF: 5
- GCF: 1
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
Correct! The GCF is 10.
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
What is the greatest common factor of 11 and 21?
A factor rainbow for the number 11. 1st arc 1 and 11,
Factor rainbow for the number 21. 1st arc 1 and 21, 2nd
arc 3 and 7
- GCF: No GCF
- GCF: 1
- GCF: 11
- GCF: 7
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
Correct! The GCF is 1.
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
Remember to identify the common factors first, then find the greatest common factor that both numbers have in common.
Summary
Questions answered correctly:
Questions answered incorrectly: