What is the purpose of using a factor tree in finding the LCM and GCF?

Prime Factorization and GCF/LCM Concepts

Interactive Video
•
Mathematics, Science
•
5th - 8th Grade
•
Hard

Mia Campbell
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To add the numbers
To identify prime factors
To simplify the numbers
To divide the numbers
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a prime factor of 20?
5
6
4
3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of 2 times 5 in the factor tree for 20?
10
15
20
25
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many times does the number 2 appear in the prime factorization of 30?
2
0
3
1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the next step after organizing the prime factors into a chart?
Multiply the numbers
Add the numbers
Divide the numbers
Subtract the numbers
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which rule is used when multiplying numbers for the LCM?
Use the largest number
Use all numbers
Use only one number from each column
Use the smallest number
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the LCM of 20, 30, and 15?
75
60
30
45
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