Revision
34 marks from 34 questions
Question 1
12 − 3 = 9 means ‘the number that is 3 less than 12 is 9’.
Write the answer to this subtraction.
3 − 12 =
Question 2
5 + 8 = 13 means ‘the number that is 8 more than 5 is 13’.
Write the answer to this addition.
−5 + 8 =
Question 3
Find the value of 10 + −2.
Question 4
Evaluate:
4 + −3 − −5 =
Question 5
What number is 0.5 more than −8?
Question 6
Enter the next number in this pattern.
12, −2, −17, −33, −50,
Question 7
−2 × 5 × 4 =
Question 8
What is the next number in this pattern?
−2, 4, −8, 16, ...
Question 9
The numbers in the circles multiply in pairs to give the
numbers in the squares between them.
What is the product of all three circled numbers if C = 3?
Question 10
Calculations inside grouping symbols must be done first.
What is the missing number in:
−54 ÷ ( ÷ 3) = −6?
Question 11
Which of the following statements is true?
a. (2 × 3) + (−7) = −8
b. (2 + 3) × (−7) = −35
c. 2 × (−3) −7 = −1
d. (2 − 3) × (7) = 7
Question 12
Calculations inside grouping symbols must be done first.
Enter the missing number:
−60 ÷ ( ÷ 5) = −6?
Question 13
The lowest common multiple of ? and 5 is 15.
? could equal:
a. 3
b. 8
c. 10
d. 60
Question 14
50 is a multiple of:
a. 10
b. 100
c. 20
d. 50
Be sure to select all correct answers.
Question 15
What is the smallest 3-digit number that is divisible by 9?
Question 16
Students are lining up in order.
Every 3rd student is female.
Every 8th student is wearing a green jumper.
In which position will the first female wearing a green jumper stand?
Position
Question 17
What is the smallest number that is divisible by 2, 3 and 7?
Question 18
Knowing multiples helps to do calculations mentally.
For example:
since 4 × 25 = 100
then 8 × 25 = 200
and 9 × 25 = 8 × 25 + 1 × 25 = 225.
Complete the following without using a calculator:
12 × 25 =
11 × 25 =
Question 19
List all the square number factors of 36. Write them in ascending
order.
, , ,
Question 20
Tara said that 49 has two factors because 49 = 7 × 7.
Is she correct?
a. Yes, because 7 divides into 49 with no remainder.
b. No, there are three factors: 1, 7, 49.
c. No, there's only one factor, 7.
d. No, because there are four factors: 1, 7, 7, 49.
Question 21
Number Factors
18 1, 2, 3, 6, 9, 18
24 1, 2, 3, 4, 6, 8, 12, 24
40 1, 2, 4, 5, 8, 10, 20, 40
Find the highest common factor of 18, 24 and 40.
Question 22
The highest common factor of two numbers is 15.
These two numbers could be:
a. 5, 15
b. 10, 30
c. 60, 80
d. 15, 3000
Question 23
The second largest factor of 36 is 18.
The second largest factor of 81 is 27.
What would be the second largest factor of 144?
Question 24
A number is divisible by 20. What other numbers is it divisible by?
(Write your answers in ascending order.)
, , , ,
Question 25
Even numbers are divisible by 2.
This statement is:
a. true all the time
b. true only some of the time
c. false all the time
Question 26
True or false?
5 is divisible by 15.
a. True
b. False
Question 27
What does it mean if a number is even and divisible by 3?
a. It is divisible by 4.
b. It is divisible by 5.
c. It is divisible by 6.
d. It is divisible by 8.
Question 28
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
If you add the digits of each multiple of 9, you get a multiple of 9, eg:
36 3+6=9
783 7 + 8 + 3 = 18
One digit is missing from each of the multiples of 9 below. Enter the missing digit for each number.
71
2 20
1 1 010
000 000
Question 29
– ÷4=
Question 30
50 – ×3=
Question 31
Work out the value of ? to complete this calculation.
= 10
?=
Question 32
The square root of 45 will lie between which two whole numbers?
(Enter the smallest number first.)
and
Question 33
Complete this statement without using your calculator.
lies between:
a. 19 and 21
b. 2 and 3
c. 4 and 5
Question 34
Clare used her calculator to find that:
= 19
Was her answer correct?
a. Yes, = 19
b. No, =3+4=7
c. No, = =5
d. The answer cannot be found using a calculator.
