Robinson Tuition
Grade 2 · Foundation · free GCSE maths worksheet

Prime numbers

Recognising primes and listing them.

9 original questions, 15 marks. Print the worksheet, mark it with the answers sheet, and use the solutions to see every step written out by hand.

Worksheet PDFWorked solutions PDFAnswers PDF

The questions

1

Write down the first five prime numbers.

1 mark
Show answer
2, 3, 5, 7, 11
2

Here is a list of numbers.

9, 15, 17, 21, 25

Write down the prime number.

1 mark
Show answer
17
3

Here is a list of numbers.

8   14   19   27   35

Write down the number from the list that is a prime number.

1 mark
Show answer
19
4

Is 51 a prime number? Give a reason for your answer.

2 marks
Show answer
No, 51 = 3 × 17
5

Here is a list of numbers.

14, 23, 33, 39, 45

  1. Write down the multiple of 7.
  2. Write down the prime number.
2 marks
Show answer
a) 14 b) 23
6

Explain why 1 is not a prime number.

1 mark
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1 has only one factor, but a prime number has exactly two factors
7

List all the prime numbers between 20 and 35.

2 marks
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23, 29, 31
8

Here are the prime numbers less than 20, with one missing: 2, 3, 5, 7, 11, 13, 17, ?

  1. Write down the missing prime number.
  2. Which of the prime numbers less than 20 is even?
  3. Explain why no other even number is prime.
3 marks
Show answer
a) 19 b) 2 c) Every even number bigger than 2 is divisible by 2, so it has more than two factors
9

Find two prime numbers that add together to make 32.

2 marks
Show answer
3 and 29 (or 13 and 19)

Every question here is original and written by Robinson Tuition. The grade follows the Edexcel grade descriptors and suits AQA and OCR too; this is not an exam-board paper.

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