# Is it Prime or Composite? (3)

In this worksheet, students decide whether or not a given number is prime or composite.

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Concepts and Vocabulary for All Numbers

Difficulty level:

### QUESTION 1 of 10

A PRIME number is one that only has two factors, itself and 1.

A COMPOSITE number is one that has more than two factors.

PRIME numbers include 2, 3, 5, 7, 11, 13, 17 etc.....

COMPOSITE numbers include 4, 6, 8, 9, 10, 12, 14, 15 etc....

Is the following number prime or composite?

95

Composite

Prime

Is the following number prime or composite?

91

Composite

Prime

Is the following number prime or composite?

97

Composite

Prime

Is the following number prime or composite?

117

Composite

Prime

Is the following number prime or composite?

119

Composite

Prime

Is the following number prime or composite?

127

Composite

Prime

Is the following number prime or composite?

131

Composite

Prime

Is the following number prime or composite?

141

Composite

Prime

Is the following number prime or composite?

233

Composite

Prime

Is the following number prime or composite?

231

Composite

Prime

• Question 1

Is the following number prime or composite?

95

CORRECT ANSWER
Composite
• Question 2

Is the following number prime or composite?

91

CORRECT ANSWER
Composite
• Question 3

Is the following number prime or composite?

97

CORRECT ANSWER
Prime
• Question 4

Is the following number prime or composite?

117

CORRECT ANSWER
Composite
• Question 5

Is the following number prime or composite?

119

CORRECT ANSWER
Composite
• Question 6

Is the following number prime or composite?

127

CORRECT ANSWER
Prime
• Question 7

Is the following number prime or composite?

131

CORRECT ANSWER
Prime
• Question 8

Is the following number prime or composite?

141

CORRECT ANSWER
Composite
• Question 9

Is the following number prime or composite?

233

CORRECT ANSWER
Prime
• Question 10

Is the following number prime or composite?

231

CORRECT ANSWER
Composite
---- OR ----

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