
Understanding LCM through Factor Trees
Interactive Video
•
Mathematics, Science
•
5th - 8th Grade
•
Practice Problem
•
Hard
Emma Peterson
FREE Resource
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8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of finding the Least Common Multiple (LCM)?
To find the average of two numbers.
To find the largest number that divides two or more numbers.
To find the smallest number that is a multiple of two or more numbers.
To find the difference between two numbers.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a prime factor of 16?
3
2
5
7
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final prime factorization of 16?
2 x 3 x 3
2 x 2 x 2 x 2
2 x 2 x 4
4 x 4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a prime factor of 20?
9
5
3
7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final prime factorization of 20?
4 x 5
2 x 5 x 5
2 x 3 x 5
2 x 2 x 5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you determine which prime factors to use when calculating the LCM?
Use the lowest power of each prime factor that appears in either number.
Use the highest power of each prime factor that appears in either number.
Use only the prime factors that appear in both numbers.
Use all prime factors from both numbers.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the LCM of 16 and 20?
70
60
90
80
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