# Prime and Composite Review

## Quiz by Keishia Yarn _ Staff - NorthGarnerMS

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10 questions
• Q1
What is the prime factorization of 25?
5
1 times 5
5 times 3
5 squared
30s
• Q2
What number(s) are prime in this group: 4, 2, 1
1
4
All the numbers
2
30s
• Q3
What is the prime factorization of 80?
2 squared times 5
2 x 2 x 3 x 5
2 x 3 x 15
2 x 2 x 2 x 5
30s
• Q4
What is the greatest common factor (GCF) of 18 and 24?
4
6
9
3
30s
• Q5
What is the prime factorization of 25?
1 times 5
5 times 3
5
5 squared
30s
• Q6
Which of the following are composite numbers: (21, 22, 25, 27, 29)
all of them
21,22,25,27
25,27,29
21,22,29
30s
• Q7
In a parade the different instruments will be grouped and march in line with each other. All the rows must have the same number of students. There are 24 wind instruments, and 36 percussion instruments. What is the greatest number of students who can be in each row?
6
4
12
24
30s
• Q8
The GCF of two numbers is 3. What are the two numbers?
6 and 12
9 and 18
21 and 14
12 and 9
30s
• Q9
Given the Prime Factorization of 12 and 90. 12 = 2 x ? x 3 90 = 3 x 3 x ? x 5 What is the missing factor? *Replace the ? with the correct factor.
2
4
1
30
30s
• Q10
This is the prime factorization for what number : 3 x 3 x 2 x 7 x 5
725
3,327
20
630
30s

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