Prime Factorization and GCF Concepts
Interactive Video
•
Mathematics
•
5th - 7th Grade
•
Practice Problem
•
Hard
Standards-aligned
Lucas Foster
FREE Resource
Standards-aligned
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of using prime factors in mathematics?
To calculate the sum of numbers
To identify the greatest common factor
To determine the average of numbers
To find the smallest number
Tags
CCSS.4.OA.B.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which two numbers multiply to give 12 in the factor tree method?
2 and 6
3 and 4
1 and 12
5 and 7
Tags
CCSS.4.OA.B.4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the prime factors of 12?
2, 2, 3
3, 3, 2
4, 3, 1
6, 2, 1
Tags
CCSS.4.OA.B.4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which number is a prime factor of 56?
8
6
4
7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the greatest common factor of 12 and 56?
2
4
3
6
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in finding the GCF of 20 and 45 using factor trees?
Break down 45 into 5 and 9
Add the numbers
Multiply the numbers
Break down 20 into 2 and 10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the prime factors of 20?
4, 5, 1
2, 2, 5
6, 2, 1
3, 3, 5
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