Factor Pairs
Find all the factor pairs of 15
1x15, 3x5
Which of the following numbers are prime?
6, 5, 8, 9, 7, 10
5 and 7
What is the greatest common factor between 20 and 25?
5
What is the prime factorization of 12?
2x2x3
Find all the factor pairs of 12
1x12, 2x6, 3x4
Which of the following number are prime?
11, 13, 15, 17, 19
11, 13, 17, 19
What is the greates common factor between 12 and 8?
4
What is the prime factorization of 60?
2x2x3x5
Find all the factor pairs of 42
1x42, 2x21, 3x14, 6x7
Which of the following numbers are prime?
21, 23, 25, 27, 29?
23, 29
What is GCF(24, 30)?
6
What is the prime factorization of 56?
2x2x2x7
Find all the factor pairs of 91
91x1, 7x13
Which of the following numbers are prime?
41, 43, 45, 47, 49
41, 43, 47
What is GCF(14,28)?
14
What is the prime factorization of 240?
2x2x2x2x3x5
Find all the prime factors of 121
1x121, 11x11
Find two prime numbers larger than 10 with a sum of 40.
23+17
What is GCF(40, 21)?
1
What is the prime factorization of 693?
3x3x7x11