Transcript Page 8, #2 * 8 EVEN

Page 22, #1-5
1. Use prime factorization to find the GFC of 25 and 75.
5 x 5 = 25
2. What is the GCF of 12, 32 and 40?
4
3. Use a Venn diagram to find the GCF of 28 and 72.
4
4. Explain what the GCF of two or more number represents.
The GCF is the largest divisor of the numbers. It is the
largest number that divides evenly into all the numbers in
the set.
5. Ingrid has 48 green balloons, 32 blue balloons, and 24 red
balloons. How many balloon bouquets can she make if each
bouquet must have the same number of each color and every
balloon is used.
8 balloon bouquets
Page 16, #1-5
1. Write the prime factorization of 100.
2x2x5x5
2. Write the prime factorization of 72 using exponents.
23 x 32
3. Write 32 x 43 as a product of prime factors.
3x3x4x4x4
4. Write 48 as a product of prime factors and then using
exponents.
2x2x2x2x3
24 x 3
5. Is 2 x 3 x 4 the prime factorization of 24? Explain your
reasoning.
No, this is the not the prime factorization of 24 because 4
is not a prime number.
Page 8, #2 – 8 EVEN
2. List all the factors of each number.
a. 18 1, 2, 3, 6, 9, 18
b. 27 1, 3, 9, 27
c. 23 1, 23
4. List the prime numbers between 52 and 76.
53, 59, 61, 67, 71, 73
6. Is the number 51 prime or composite. Explain your answer.
51 is composite because it has more than two factors. Its factors
are 1, 3, 17, and 51.
8. Give three examples of composite numbers and tell why they are
composite. (Answers will vary)
Example: 9, 18 and 21 because they all have three as a factor.