Find All Factors
List all the factors of 12.
1, 2, 3, 4, 6, 12
Complete the factor pair: 1×□=16
16
Find all the common factors of 8 and 12.
1, 2, 4
What is the greatest common factor of 8 and 12?
4
Where should 6 be placed?
In the overlap
List all the factors of 18.
1, 2, 3, 6, 9, 18
Complete the factor pair: 3×□=21
7
Find all the common factors of 12 and 18.
1, 2, 3, 6
What is the greatest common factor of 18 and 24?
6
Where should 9 be placed?
Factors of 36 only
List all the factors of 24.
1, 2, 3, 4, 6, 8, 12, 24
What factor pair of 24 is missing:
1×24, 2×12, 3×8, ___?
4×6
Find all the common factors of 20 and 30.
1, 2, 5, 10
What is the greatest common factor of 24 and 36?
12
Where should 8 be placed?
Factors of 24 only
List all the factors of 36.
1, 2, 3, 4, 6, 9, 12, 18, 36
What number has these factor pairs:
1×30, 2×15, 3×10, 5×6?
30
Find all the common factors of 28 and 42.
1, 2, 7, 14
What is the greatest common factor of 42 and 56?
14
Where should 5 be placed?
Outside both circles
List all the factors of 48.
1, 2, 3, 4, 6, 8, 12, 16, 24, 48
How many factor pairs does 48 have?
5
Find all the common factors of 48 and 72.
1, 2, 3, 4, 6, 8, 12, 24
What is the greatest common factor of 48, 72 and 96?
24
Which numbers belong in the overlap?
1, 2, 3, 4, 6, 12