What is a denominator? | The bottom number in a fraction. |

What is a numerator? | The top number in a fraction. |

When do you need a common denominator | When adding or subtracting fractions. |

What is 10% as a fraction? | 1/10 |

What is 20% as a decimal? | 0.2 |

What is 1/4 as a percentage? | 0.25 |

What is 2/5 as a decimal | 0.4 |

What is 75% as a fraction? | 3/4 |

What is 9/10 as a percentage? | 90% |

How do you convert a fraction to a percentage? | Fraction x 100 |

How do you convert a decimal to percentage | Decimal x 100 |

What is the formula for percentage change? | (Amount of change/Original amount) x 100 |

When a negative number is multiplied by a negative number is the answer negative or positive? | positive eg (-2) x (-3) = 6 |

When a positive number is multiplied by a negative number, is the answer negative or positive? | Negative eg (-3) x 4 = (-12) |

How do you find HCF of two numbers using the products of the prime factors? | Use the lowest version of only the common prime factors. |

How do you find the LCM of two numbers using the products of their prime factors? | Use the highest version of all the prime factors. |

What does LCM stand for? | Lowest Common Multiple |

What does HCF stand for? | Highest Common factor |

What is the resiprocal of a fraction? | The fraction upside down. |

What kind of a line is y = number | Straight, horizontal |

What kind of a line is x = number | Straight, vertical. |

what letter is used to stand for gradient? | m |

What does 'gradient' mean? | The steepness of a line. |

What is the formula for gradient? | (difference in y)/(difference in x) (y1 - y2)/(x1 - x2) |

What does 'intercept' mean? | The point where a straight line cuts the y axis. |

What letter is used to stand for intercept? | c |

In y = mx + c, what does the 'm' stand for? | m = gradient |

In y = mx + c, what does the 'c' stand for? | c = intercept with y axis |

What is the general equation of a straight line? | y = mx + c |

How do you calculate the coordintates of the mid point of a line between the points (x1,y1) and (x2,y2)? | (x1 + x2)/2 (y1 + y2)/2 |

What does the graph of a positive quadratic look like ? | 'Smiley face' |

What does the graph of a negative quadratic look like? | 'Sad face' |

If lines are parallel, what is the connection between their gradients? | they are equal m1 = m2 |

How do you solve simultaneous equations using graphs? | Draw both lines, the solution is the coordinate of the point where the line cross. |

What is the name of a 4 sided shape? | Quadrilateral |

What is a rhombus? | A parallelogram with 4 equal sides. |

What is a parallelogram? | A 'squashed' rectangle |

What is the name of a quadrilateral with only one pair of parallel lines? | Trapezium |

What do the interior angles of a quadrilateral add up to? | 360 degrees |

What are 'alternate angles'? | Z angles on parallel lines. Alternate angles are equal. |

What are corresponding angles? | F angles on parallel lines. Corresponding angles are equal. |

What are 'interior angles'? | C angles in parallel lines. Interior angles add up to 180 degrees. |

What is a radius? | Distance from centre to edge of circle. |

What is a diameter? | The distance from edge to edge of a circle that passes through the centre. Diameter = radius x 2 |

What is the formula for the Area of a circle? | A = ∏r2 |

What is the formula for the circumference of a circle? | C = ∏d |

What does 'circumference' mean? | The perimeter of a circle |

What is the formula for the area of a cuboid? | V = length x width x height |

What is the formula for the volume of a cube? | V = length3 |

What do the exterior angles of any polygon always add up to? | 360° |

What do the interior angles of a pentagon add up to? | 540° |

What is the formula for the sum of interior angles of any polygon? | Si = 180(n - 2) |

What is an angle of elevation? | Upwards from horizontal. |

What is an angle of depression? | Downwards from horizontal. |

How many cm3 is 1 m3 | 1 m3 = 1,000,000 |

How many mm3 = 1 cm3 | 1 cm3 = 1,000 mm3 |

What is the formula for the area of a parallelogram? | A = base x height |

What facts are needed to prove 2 triangles are congruent? | SSS, SAS, ASA, AAS, RHS |

What are 'similar shapes'? | 2 shapes, identical in every respect except size. |

How is the probability of one event calculated? | P(event) = (no of times event occurs)/(total number of events) |

What is the probability of an event NOT happenning? | P(event not happenning) = P(event') = 1 - P(event) |

In a scatter diagram, what is negative correlation? | \ ie down from left to right |

In a scatter diagram, what is positive correlation? | / ie up from left to right. |

What is perfect correlation? | All dots lie in a straight line. |

What is 'strong' correlation? | The dots are very close to being in a straight line. |