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# Download Homework Helper Lesson 1 Prime Factorization

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```Name
Number and Operations in Base Ten
Preparation for 5.NBT.2
Lesson 1
Prime
Factorization
Homework Helper
eHelp
Need help?
connectED.mcgraw-hill.com
Find the prime factorization of 42.
You can choose any pair of whole
number factors, such as 2 × 21,
3 × 14, or 6 × 7.
42
2
Continue to factor any number
that is not prime.
×
21
2 × 3
×
7
Write the prime factors in order
from least to greatest.
The prime factorization of 42 is 2 × 3 × 7.
Practice
Copyright © The McGraw-Hill Companies, Inc.
Find the prime factorization of each number.
1. 50 =
2. 81 =
3. 65 =
4. 28 =
Lesson 1 My Homework85
Problem Solving
5. Britney scored an 85 on her last math test. Write the prime
factorization of 85.
6. Priscilla has 56 stickers in her collection. Write the prime
factorization of 56.
3
7.
Find the Error Lainey wrote the prime factorization
of 60 as 2 × 5 × 6. Is she correct? If not, what is the prime factorization
of 60? Explain.
Vocab
Vocabulary Check
8.
numbers can be written as a product of
factors. This is called the prime factorization of a number.
Test Practice
9. Josiah had a pot belly pig as a pet
that weighed 46 pounds. What is
the prime factorization of 46?
A
2 × 23
C
2 × 2 × 13
B
2 × 2 × 11
D
3 × 23
86Need more practice? Download Extra Practice at
connectED.mcgraw-hill.com
Copyright © The McGraw-Hill Companies, Inc. GK Hart/Vikki Hart/Photodisc/Getty Images
Fill in each blank with the correct term or number to complete
the sentence.
```
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