Part 1 Pythagoras: Pythagorean triples; finding the hypotenuse; finding any side. Part 2 Formulas: formulas; patterns; trial and improvement. Part 3 Circles: how long is a circle?; area of a circle. Part 4 Statistics: looking at data; averages and range; cumulative frequency. Part 5 Accuracy: rounding; error in measurement; standard form. Part 6 Volume: volumes of prisms and cylinders; another dimension. Part 7 Number revision: replay; increase and decrease; ratio. Part 8 Algebra: brackets; two brackets; equations and formulas. Part 9 Statistics: scatter diagrams; pie-charts; misleading diagrams. Part 10 Trigonometry: finding lengths; finding an angle. Part 11 The best chapter, probably: probability and relative frequency; listing outcomes; tree diagrams. Part 12 Loci - know your place: locus of a point; constructions. Part 13 Algebra - two at a time: replay; simultaneous equations; inequalities. Part 14 Graphs - on the button: graphs of calculator buttons; graph sketching. Part 15 Transformations: transformations; combined transformations; enlargement; similar triangles. Part 16 Get in shape: polygons; symmetry; nets of solids; building a shape sorter. Part 17 Help yourself: multiplying by 10; multiplying by 100, 1000, ...; multiplying by 20, 30, ...; multiplying decimals by 10; multiplying decimals by 100; multiplying decimals by 1000; long multiplication; long division; dividing by 10; dividing by 100, 1000, ...; dividing by 20, 30, ...; dividing decimals by 10; dividing decimals by 100; dividing decimals by 1000; multiplying and dividing by 0.1, 0.01, ...; adding fractions; subtracting fractions; simplifying fractions; converting units. Part 18 Answers: test yourself; help hourself.