Unit 1 Examination-style questions
1
Use brackets to make the following statement correct.
 −  ×  +  ÷  = .
2
The lowest recorded temperature in Alaska is −. °C.
The highest recorded temperature in Alaska is . °C.
Find the dierence between these temperatures.
3
Find the highest common factor (HCF) of  and .
4
(a)
(b)
5
Write down the prime numbers between  and .
6
 –
Without using a calculator
, work out
Write  as a product of prime factors.
Find the lowest common multiple (LCM) of  and .




You must show all your working and give your answer as a mixed number
in its simplest form.
[]
7



Without using a calculator
, work out 
÷

You must show all your working and give your answer as a mixed number
in its simplest form.
[]
Write the number . correct to  decimal places,
Write the number . correct to  signicant gures.
8
(a)
(b)
9
Write each number correct to  signicant gure and estimate the value of
the calculation. You must show your working.
. 
.  + .
10
[]
Expand the brackets and simplify.

x
( −)−(x + )
11
Solve.
46
UNIT1
x
– =

[]
[]