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Worksheets

Common Factors and Multiples

Total questions: 16

Worksheet time: 16mins

Name
Class
Date
1.

What is the GCF of 8 and 24?

a)

1

b)

24

c)

8

d)

4

2.

Find the GCF and use the distributive property for 15 +5.

a)

3 (5+5)

b)

5 (3+5)

c)

5 (3+1)

d)

15 (1+5)

3.

What does GCF mean?

a)

Great Cookie Fever

b)

Greatest Common Factor

c)

Greatest Common Multiple

d)

Greatest Compared Factor

4.

How do you find the multiples of a number?

a)

Use division to find out what you multiply to make a multiple.

b)

Use my multiplication facts and write them out.

c)

Write down how many times that number appears in a multiplication table/chart.

5.

What are the first 5 multiples of 16?

a)

1, 2, 4, 8, 16

b)

16, 32, 48, 64, 80

c)

16, 22, 38, 44, 50

d)

1, 2, 3, 4, 5

6.

Adam is trying to find the greatest number of gift bags he can give to his friends. He wants the same amount of toy dinosaurs and stickers in each bag. If he has 30 toy dinosaurs and 20 stickers, what does he need to find? How many dinosaurs and stickers will be in each bag?

a)

Greatest Common Multiple; 3 dinosaurs and 2 stickers

b)

Greatest Common Factor; 3 dinosaurs and 2 stickers

c)

Greatest Common Factor; 6 dinosaurs and 4 stickers

d)

Least Common Multiple; 60 dinosaurs and 60 stickers

7.

What is the greatest common factor of 24 and 36?

a)

2

b)

3

c)

12

d)

24

8.

What is the LCM of 15 and 10?

a)

15

b)

25

c)

30

d)

20

9.
What is the LCM of 6 and 24? 
a)
3
b)
6
c)
12
d)
24
10.
Ap- What is the LCM of 2, 4, 6?
a)
6
b)
12
c)
4
d)
2
11.
What are the factors of 25?
a)
1, 2, 3, 5, 10, 15, 25
b)
1, 5,  25
c)
1, 25
d)
1, 5
12.
List all the factors of 12
a)
1, 2, 3, 4, 6, 12
b)
1, 2, 4, 12
c)
1, 12
d)
1, 2, 3, 4, 5, 6, 12
13.
The Greatest Common Factor of two prime numbers is
a)
0
b)
1
c)
There are no common factors.
d)
Themselves.
14.
Find the Greatest  Common Factor (GCF) of 14 & 22.
a)
1
b)
2
c)
7
d)
14
15.
Sara had 16 red flowers and 24 yellow flowers.  She wants to make bouquets with the same number of each color flower in each bouquet.  What is the greatest number of bouquets that she can make?
a)
4
b)
2
c)
48
d)
8
16.

A prime number is:

a)

A number that is made only by multiplying 1 and itself.

b)

An odd number.

c)

A popular number.

d)

The least common multiple of two numbers.