Ideas
What does GCF Stand for?
Greatest Common Factor
What is the prime factorization of 60?
2 ⋅ 2 ⋅ 3 ⋅ 5
Find the GCF of
14 and 21
7
1/4 + 1/6
5/12
Find the LCM of 12 and 18
36
What does LCM stand for?
Least Common Multiple
What is the prime factorization of 44?
2 ⋅ 2 ⋅11
Find the GCF of
20 and 36
4
Simplify
32/60
8/15
Find the LCM of
18 and 27
54
When would a person use the greatest common factor?
To simplify fractions
List ALL factors of 18.
Hint: Use every combination of one or more of the primes.
1, 2, 3, 6, 9, 18
Find the GCF of
12 and 18
6
22/25 * 20/33
Answer in a SIMPLIFIED fraction.
8/15
Find the LCM of
12 and 21
84
When would a person use the least common multiple?
To find a common denominator while adding fractions.
What is the prime factorization of 64?
Answer using exponential form.
2^6
Find the GCF of
48 and 60
12
3/20 + 7/12
11/15
Find the LCM of
18 and 15
90
What tool or skill is useful for finding BOTH the LCM and the GCF quickly?
Factor Trees!
What is the prime factorization of 72?
Answer in EXPONENTIAL FORM.
2^3 3^2
Find the GCF for
350 and 525
175
Simplify:
(6x^2 y^3)/ (14x^4 y)
(3y^2)/(7x^2)
Find the LCM of
15ab^2 and 10a^2 b^3
30a^2b^3