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Worksheets

LCM/ HCF By Venn Diagram

Total questions: 20

Worksheet time: 26mins

Name
Class
Date
1.
GCF of 32 and 40
a)
2
b)
4
c)
6
d)
8
2.

Which of the following is the correct prime factorization for 36?

a)

6x6

b)

4x9

c)

2x2x9

d)

2x2x3x3

3.

Look at the Venn Diagram.

How many yellow lady bugs are there?

a)

There are 6 yellow lady bugs

b)

There are 11 yellow lady bugs

c)

There are 5 yellow lady bugs

4.
How many senior boys play football and wrestle?
a)
9
b)
12
c)
18
d)
39
5.

Use the prime factors and the Venn diagram to find the GCF

a)

360

b)

12

c)

6

d)

60

6.

Use the prime factors and the Venn diagram to find the LCM

a)

360

b)

12

c)

6

d)

60

7.

How many people only own cats and dogs?

a)

3

b)

4

c)

6

d)

7

e)

9

8.
LCM stands for...
a)
lowest common multiplier
b)
least common multiple
c)
longer calculator math
d)
longest code maker
9.
GCF stands for 
a)
Greatest common factor
b)
Greatest common fraction
c)
Giant cat fingernail 
d)
Greatest calculated factor
10.

Use the diagram to find the HCF of 35 and 45

a)

5

b)

9

c)

7

d)

63

11.

Use the diagram to find the LCM of 35 and 45

a)

105

b)

315

c)

350

d)

63

12.

Use the diagram to find the HCF of 18 and 24

a)

5

b)

6

c)

3

d)

12

13.

Use the diagram to find the LCM of 18 and 24

a)

54

b)

36

c)

12

d)

72

14.

Use the diagram to find the LCM of 84 and 96

a)

42

b)

224

c)

336

d)

672

15.

What part of the venn diagram do you look at to find the LCM?

a)

middle

b)

all

c)

left side only

d)

right side only

16.

What part of the venn diagram do you look at to find the GCF?

a)

middle

b)

all

c)

left side only

d)

right side only

17.

Which of the following is the correct prime factorization for 36?

a)

6x6

b)

4x9

c)

2x2x9

d)

2x2x3x3

18.
What are the factors of 25?
a)
1, 2, 3, 5, 10, 15, 25
b)
1, 5,  25
c)
1, 25
d)
1, 5
19.
multiples for the number 3 include..
a)
4,8,12,16,18,21
b)
3,5,7,9,10,12
c)
3,4,5,6,7,8
d)
3,6,9,12,15,18
20.

Prime numbers have more than 2 factors.

a)

true

b)

false