Quiz about Prime Number Factor Trees and Gcf

Question 1

What is the missing factor?

Accepted Answer

5

Answer

1

Answer

2

Answer

8

Question 2

What are the missing factors?

Accepted Answer

3 and 3

Answer

2 and 3

Answer

3 and 6

Answer

1 and 9

Question 3

Use a factor tree to find the prime factorisation of 168

Accepted Answer

$$2 imes2 imes2 imes3 imes7$$

Answer

$$2 imes3 imes4 imes7$$

Answer

$$2 imes2 imes3 imes7$$

Answer

$$2 imes2 imes2 imes2 imes3 imes7$$

Question 4

What is the GCF?

Accepted Answer

8

Answer

3

Answer

2

Answer

4

Question 5

What is the GCF?

Accepted Answer

9

Answer

2

Answer

3

Answer

18

Question 6

What is the GCF?

Accepted Answer

9

Answer

2

Answer

3

Answer

18

Question 7

What is the GCF?

Accepted Answer

8

Answer

3

Answer

2

Answer

4

Question 8

What is the GCF of 18 and 24?

Accepted Answer

6

Answer

3

Answer

8

Answer

9

Question 9

Find the GCF of 64 and 144

Accepted Answer

16

Answer

8

Answer

6

Answer

2

Question 10

What is the GCF of 4 and 12?

Accepted Answer

4

Answer

3

Answer

1

Answer

6

Question 11

Find the GCF of 64 and 144.
Hint-Remember to use your factor trees to help you.

Accepted Answer

16

Answer

8

Answer

6

Answer

2

Question 12

Using a Factor Tree, find the prime factorization of 48 in expanded form.

Accepted Answer

2 x 2 x 2 x 2 x 3

Answer

2 x 12 x 12

Answer

2 x 2 x 2 x 2 x 3 x 3 x 5

Answer

7 x 7 x 7

Question 13

Which pair of numbers has a GCF of 5?

Accepted Answer

10 and 25

Answer

30 and 40

Answer

45 and 9

Answer

50 and 25

Question 14

Prime numbers have:

Accepted Answer

Exactly 2 factors

Answer

2 pairs of factors

Answer

More than 2 factors

Answer

1 factor

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