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Year 7 Number Theory Topic Test
ANSWER
ANSWER
1.List the first 5 counting
numbers.
16. Find
2. List the first 3 odd
numbers.
17. Find
3. Write the even
numbers between 11 and
19.
18. ( 25 ) 2 = ?
4. List all the factors of
24.
19. Evaluate 2 3 + 7 2
5. Write the prime
numbers less than 30.
20. What is the square of
100?
6. Why is 4 a prime
number?
21. What is the cube root of
8?
7. . Give 2 prime
numbers that add to give
20.
22. What is the sixth
squared number?
8. Write 42 as a product
of its prime factors.
23. Write the tenth cubic
number.
9. . What is the 5th
composite number?
24. All even numbers are
divisible by.........?
10. What is the first
multiple of 9?
25. Is 4977 divisible by 3?
11. Write the first 3
multiples of 12.
26. Is 828 426 690 divisible
by 10?
12. What is the lowest
common multiple of 9
and 12?
27. Is 322251 divisible by
5?
13. List the factors of 24.
28. How do you know if a
number is divisible by 5?
14. List the factors of 18.
29. Write a 3 digit number
that is divisible by 4.
30. 13771285 is divisible by
which of the following
numbers?
2, 3, 5, 9.
15. The highest common
factor of 18 and 24 is ... ?
81
3
64
ANSWER
31. Draw a factor tree to show 96 as a
product of its prime factors.
32. List all the factors of 100.
33. 1000 2 = .....................
34. What is the lowest common multiple of 6, 4 and 9?
35. Halve the square of 8.
36. Circle the numbers that are divisible by 6:
5225, 3552, 7290, 3225, 6243, 1715
37. Write 3 consecutive odd numbers that add to 123.
38. If 59 2 = 3481, then
3481 = ....?
39. How many multiples of 7 are less than 100?
40. Who am I?
 I am a three digit whole number.
 My first digit is a perfect square.
 My other two digits are a perfect cube.
 The sum of my digits is 13.