Maths revision 2011 maths for yr9 gcse students in set 2 1.0 / 5 based on 5 ratings ? MathematicsGCSE Created by: Harsharanjit MustotaCreated on: 04-06-11 14:43 Volume of a square prism Volume of a square prism - H x L x W 1 of 9 Rules on Expanding brackets Rules on Expanding brackets 1. Start with the first term and multiply everything in the 2nd bracket 2. Move on to the 2nd term and multiply everything in the 2nd bracket. 3. Tidy up 2 of 9 Rules on factorise brackets Rules on factorise brackets: 1. Open new set of brackets 2. Look for the most common letter or number (that goes in to both number ) 3. Put the most common term outside the bracket 4. Work out what goes inside the bracket 3 of 9 Factorising quadratic equations Factorising quadratic equations 1. 3 terms = 2 pairs of brackets 2. How do I get the first term separate? 3. Write down all the pairs of numbers tha multiply to give the third term 4. Which pair added together make the 2nd term 5. Use this pair of numbers in the brackets. 4 of 9 Solve quadratic equations Solve quadratic equations 1. 3terms = 2 pairs of brackets 2. How do I get the first term separate? 3. Write down all the pairs of numbers that multiply to give the third term 4. Try all the pairs of numbers by extending the brackets. 5 of 9 ranges Mode- the mode of a set of a data is the value of which occurs most often. The median- the median is the middle value when the data is arranged in order of size or the mean of two middle values Mean- the mean of a set of data is the sum of the divided by the number of the value. 6 of 9 locus Locus - locus is a construction that follows a set of rules. 7 of 9 factors l.c.m - lowest common multiple h.c.f- highest common factor 8 of 9 triangles Equilateral triangle - 3 sides are the same, 3 angles the same. Right-angled triangle - 1 angle of 90oc degrees Scalene- no side or angle the same Isosceles - 2 sided the same, 2 angles the same Diagonals bisect each other means when two diagonals lines cross each other. The angle in the middle is 90oc. 9 of 9
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