IGCSEMaths: ExtendedCIEExam Questions1. Number1.1 Number Toolkit

Syllabus Edition

First teaching 2021

Last exams 2024

|

Number Toolkit (CIE IGCSE Maths: Extended)

Exam Questions

40 mins26 questions
Easy
Medium
Hard
1
Sme Calculator1 mark

Write two hundred thousand and seventeen in figures.

How did you do?

Did this page help you?

2
Sme Calculator1 mark

At noon the temperature in Maseru was 21°C.
At midnight the temperature had fallen by 26 °C.
 
Work out the temperature at midnight.
 

............................................. °C

How did you do?

Did this page help you?

3
Sme Calculator3 marks

32 space space space space 33 space space space space 34 space space space space 35 space space space space 36 space space space space 37 space space space space 38 space space space space 39

From the list of numbers, write down

i)
a multiple of 8,

[1]

ii)
a square number,

[1]

iii)
a prime number.

[1]

How did you do?

Did this page help you?

4
Sme Calculator1 mark

Write down the temperature that is 7 °C below -3 °C.

............................................... °C

How did you do?

Did this page help you?

5
Sme Calculator2 marks

Here is a list of numbers.

87          77          57          47          27

From this list, write down

i)
 a cube number,

[1]

ii)

a prime number.

[1]

How did you do?

Did this page help you?

6
Sme Calculator3 marks
27 28 29 30 31 32 33

From the list of numbers, write down

i)
a multiple of 7,

[1]

ii)
a cube number,

[1]

iii)
a prime number.

[1]

How did you do?

Did this page help you?

7
Sme Calculator1 mark

The temperature at 07 00 is -3 °C.
This temperature is 11 °C higher than the temperature at 01 00.
 
Find the temperature at 01 00.

................................................ °C

How did you do?

Did this page help you?

8
Sme Calculator1 mark

Write the number five million, two hundred and seven in figures.

How did you do?

Did this page help you?

9
Sme Calculator1 mark

One day in Chamonix the temperature at noon was 6°C.
At midnight the temperature was 11°C lower.

Write down the temperature at midnight.

............................................ °C

How did you do?

Did this page help you?

10
Sme Calculator2 marks

Complete the list of factors of 36.

1, 2, ............................................. , 36

How did you do?

Did this page help you?

11
Sme Calculator1 mark

Write 15 060 in words.

How did you do?

Did this page help you?

1
Sme Calculator1 mark

Write down the cube number that is greater than 50 but less than 100.

How did you do?

Did this page help you?

2
Sme Calculator1 mark

Write down a square number greater than 10.

How did you do?

Did this page help you?

3
Sme Calculator4 marks

3.56        5        square root of 196        8        square root of 7        12

From the list, write down a number that is

i)

a multiple of 3,

[1]

ii)

a cube number,

[1]

iii)

a prime number,

[1]

iv)

an irrational number.

[1]

How did you do?

Did this page help you?

4
Sme Calculator1 mark

The lowest temperature recorded at Scott Base in Antarctica is -57.0 °C.
The highest temperature recorded at Scott Base is 63.8 °C more than this.

What is the highest temperature recorded at Scott Base?

................................................°C

How did you do?

Did this page help you?

5
Sme Calculator1 mark

Write down a prime number between 50 and 60.

How did you do?

Did this page help you?

6
Sme Calculator1 mark

Calculate negative 12 divided by negative 2. 

How did you do?

Did this page help you?

7
Sme Calculator2 marks

Here is a list of numbers.

 21   2 over 3   square root of 13   31   square root of 121   51   0.7 

From this list, write down

i)
a prime number,
[1]
ii)
an irrational number.

[1]

How did you do?

Did this page help you?

8
Sme Calculator1 mark

Write down a prime number between 20 and 30.

How did you do?

Did this page help you?

9
Sme Calculator2 marks

22            17            25            41            39            4

Work out the difference between the two prime numbers in the list above.

How did you do?

Did this page help you?

1
Sme Calculator1 mark

Explain why square root of 3 is irrational.

How did you do?

Did this page help you?

2
Sme Calculator1 mark

1, 2, 3, 5 and 7 are all common factors of two numbers.

Write down the digit that the two numbers must end in.

How did you do?

Did this page help you?

3
Sme Calculator1 mark

Write down an irrational number.

How did you do?

Did this page help you?

4
Sme Calculator1 mark

Insert one pair of brackets to make this calculation correct.

7 space space minus space space 5 space space minus space space 3 space space plus space space 4 space space equals space space 9

How did you do?

Did this page help you?

5a
Sme Calculator3 marks

Tom is tiling a wall.

He needs to buy at least 100 tiles.
The tiles are sold in large packs and small packs.

Large pack 40 tiles     £18
Small pack 28 tiles     £14
Special offer

25% reduction when you buy 3 or more large packs

Work out the cheapest cost for Tom to buy the packs of tiles he needs.

£.............................

How did you do?

5b
Sme Calculator1 mark

Tom is also tiling a floor.

The floor is a rectangle with length 600 cm and width 240 cm
Each tile is a square with side 40 cm

Tom uses this method to work out the number of tiles he needs.

Number of tiles that will fit along the length = 600 ÷ 40
                                                                              = 15
Number of tiles that will fit along the width = 240 ÷ 40
                                                                             = 6
Total number of tiles needed = 15 + 6
                                                   = 21


Give a reason why Tom’s method is wrong.

How did you do?

Did this page help you?

6
Sme Calculator1 mark

a is a prime number.

b is an even number.

N space equals space a squared space plus space a b

Circle the correct statement about N.

could be
even or odd		 always even
always prime always odd

How did you do?

Did this page help you?