# Year 8 Algebra Recap

## 1 files28/05/2016

(a) Revision of simplifying algebraic expressions (multiplying, dividing, adding, expanding single brackets).

(b) Revision of solving simple equations, e.g. (x2 - 7)/2 = 9 and 1 - 3x = 2x - 7# Changing the Subject (pre-GCSE)

## 8 files24/05/2016

(Based on the Tiffin Year 8 scheme of work) (a) Change the subject of any formula where the new subject appears only once. Includes roots, squares, brackets, where x appears within a negative term and/or in the denominator.

(b) Be able to cross multiply.

(c) Determine a value when the formula and values of all other variables are given.# Constructions (pre-GCSE)

## 3 files28/05/2016

(Used for the Tiffin Year 8 scheme of work. Does not include loci.)

(a) Construct triangles given SAS (Side-Angle-Side), ASA, SSS.

(b) Construct perpendicular and angle bisectors, angles of 30, 45, 60 and 90, and the perpendicular from a point on a line.# GCSE Interior & Exterior Angles

## 4 files24/12/2018

Interior and exterior angles of polygons, including tessellation problems.