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A secondary school student in a blue uniform uses a compass and pencil to complete a maths diagram in a classroom.

Use this Gap-Finder to build your exam confidence by spotting exactly what to revise next.

KS3 Maths Gap-Finder Quiz

Use this KS3 Maths Gap-Finder to check what you know, spot what’s missing, and choose what to practise next, especially key number skills and early algebra.

Explore the Topic →

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Fascinating Fact:

Prime numbers have exactly two factors, 1 and themselves. They are used in internet security because they are hard to break apart.

In KS3 Maths, you strengthen number fluency and start using algebra with confidence. A gap-finder quiz helps you identify which skills need more practice, such as order of operations, simplifying expressions, and spotting factors and multiples accurately.

Key Terms

Order of operations: The agreed rule for calculating, where brackets are done before multiplication and division, then addition and subtraction.
Expression: A mathematical phrase with numbers, letters, and symbols, such as 3x + 5, that can be simplified.
Multiple: A number you get by multiplying a given number by a whole number, such as 24 being a multiple of 6.

Frequently Asked Questions (Click to see answers)

What is the best way to revise for a KS3 maths gap finder?

The best way is to redo the questions you missed, write down the rule you forgot, and practise a few similar examples until you can do them accurately without guessing.

How do I use BODMAS correctly in KS3 maths?

Use BODMAS by working out brackets first, then orders like powers, then multiplication and division left to right, and finally addition and subtraction left to right.

What is the difference between a factor and a multiple?

A factor divides exactly into a number, while a multiple is made by multiplying a number by a whole number, so 4 is a factor of 20 but 20 is a multiple of 4.

Try These Related Quizzes

1 .

What is the value of 3x² when x = 2?

2 .

What is 3/4 written as a percentage?

10%

25%

50%

75%

3 .

What is -66 + -33 - -22?

-77

-44

On a number line, count to the left for negative numbers and right for positive numbers.

4 .

Two interior angles in a triangle are 35^o and 55^o. What is the 3^rd angle?

75^o

85^o

90^o

95^o

Take 35 and 55 from 180 to find the answer.

5 .

If 3a + 2 = a + 6, then which of these is incorrect?

3a + 2 - a = 6

2a = 6 + 2

2a = 4

a = ⁴⁄₂

To correct the equation it should read 2a = 6 - 2. All of the above leads us to the conclusion that a = 2

6 .

What is £8 : 420p in its simplest form?

13 : 25

17 : 28

19 : 33

40 : 21

The quantities in the ratio MUST be in the same units: in this case change the £8 to 800p

7 .

Six children recorded their times (in minutes) to do a jigsaw: 12, 10, 15, 19, 11, 17. What is the range of these times?

9 minutes

12 minutes

15 minutes

19 minutes

Largest = 19, smallest = 10, 19 - 10 = 9

8 .

If a parallelogram has a perpendicular height of 7 cm and a base of 11 cm, what is its perimeter?

44 cm

28 cm

36 cm

It is impossible to say

Did you get it wrong by confusing the perpendicular height with the length of its shortest side? The perpendicular height is NOT the same as the length of the shortest side!

9 .

What is 6.04 ÷ 4?

1.4

1.5

1.51

6 ÷ 4 =1.5 and 0.4 ÷ 4 = 0.01. Now just add these two figures together

10 .

What is 9.825 rounded to 2 decimal places?

9.8

9.82

9.83

9.9

Author: Tara Kemp

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