Build an understanding of Mathematical concepts and practise your skills. Over 120 exercises designed to teach addition, subtraction, multiplication, division, decimals, time, money, length, weight, volume, percentages, equations, negative numbers, geometry and fractions. Ideal for pupils aged 12 to 15. Other exercises promote an understanding of whole numbers, decimals and powers. Some exercises require the pupil to supply an answer, while others are multiple choice. Others have a time limit, which can be extended or removed.