Number is where careless marks are lost: a rounded value carried through a calculation, a ratio read the wrong way round, a percentage increase applied to the wrong base.
Types of Number and Sets
Cambridge names the number systems you have to recognise and use: natural numbers, integers, primes, squares, cubes, rational and irrational numbers, and reciprocals. Thi...
9 questions · 23 marks
Revise this topicPowers, Roots and Indices
Cambridge expects you to calculate with squares, cubes and their roots, and to work fluently with indices and the rules that combine them. Most of the marks here are lost...
8 questions · 19 marks
Revise this topicFractions, Decimals and Percentages
Fractions, decimals and percentages are three ways of writing the same number, and Cambridge expects you to move between them without hesitating. This topic covers the la...
8 questions · 20 marks
Revise this topicThe Four Operations and Ordering
Cambridge expects you to use the four operations with integers, fractions and decimals, with the operations done in the agreed order and brackets used to change it. The s...
8 questions · 22 marks
Revise this topicStandard Form
Standard form writes a number as , where is at least 1 and less than 10 and is a positive or negative integer. Cambridge asks you to convert ...
8 questions · 20 marks
Revise this topicEstimation and Limits of Accuracy
Cambridge asks you to round values to a stated accuracy, to estimate a calculation by writing every number to 1 significant figure, and to give the upper and lower bounds...
8 questions · 17 marks
Revise this topicRatio, Proportion and Rates
Cambridge tests ratio and proportion through everyday contexts: recipes, map scales, best value, pay, exchange rates, flow rates, density and average speed. Marks go miss...
8 questions · 23 marks
Revise this topicMoney, Time and the Calculator
Cambridge groups three practical skills in this topic: calculating with money, converting between currencies, and working with time from seconds up to years. It also cove...
8 questions · 23 marks
Revise this topicExponential Growth and Decay
This topic is Extended content only - exponential growth and decay does not appear in the Core syllabus. Everything in it rests on one idea: when a quantity changes by th...
6 questions · 14 marks
Revise this topic