Don't forget to take a ruler and scientific calculator into the exam.
Maths questions often start with the command word 'calculate'. You need to use numbers given in the question to work out the answer.
When an answer to a maths question is marked:
Take extra care when converting between units.
Make sure you give answers to a suitable number of significant figures.
Maths questions might ask you to plot or complete a graph or table. When you draw a graph, make sure you:
You may be given a grid with axes labelled and scales already given. Sometimes you may be given an empty grid for you to supply your own axes. When you do this:
These questions have been written by Bitesize consultants as suggestions to the types of questions that may appear in an exam paper.
An atom of phosphorus has the symbol .
Give the number of protons, neutrons and electrons in this atom of phosphorus. [3 marks]
Number of protons ______
Number of neutrons ______
Number of electrons ______
Number of protons = 15 
Number of neutrons = 31 - 15 = 16 
Number of electrons = number of protons = 15 
The radius of an atom is 1 × 10-10 m.
The radius of the nucleus of this atom is 1 × 10-14 m.
Calculate how many times smaller the radius of the nucleus is than the radius of the atom. [2 marks]
(1 × 10-10 m) ÷ (1 × 10-14 m) 
Nucleus is 10,000 times smaller 
Magnesium exists naturally as three isotopes.
Table 1 shows the relative abundance of each isotope.
|Relative mass of isotope||Percentage abundance of isotope|
Calculate the relative atomic mass, Ar, of magnesium.
Give your answer to two decimal places. [2 marks]
= 24.32 
Plot the data in table 2 on a bar chart. [4 marks]
|Group 1 element||Boiling point in °C|
Marks will be given for the following:
x-axis labelled 'Element'. 
y-axis labelled 'Boiling point in °C'. 
Even scale on y-axis, taking up most of the height of the grid. 
Bars correctly drawn.