1 Decimals 2 Ratio 3 Percentage 4 Percentage increase 5 Percentage decrease 6 Calculating speed 7 Calculating distance 8 Calculating time 9 Speed, distance and time 10 Direct proportion: Equation 11 Direct proportion: Calculating variables 12 Inverse proportion 13 Exponents 14 Solving exponential equations 15 Square roots 16 Cube roots 17 Writing scientific notation 18 Changing to ordinary numbers 19 Scientific notation: Worded questions 20 Calculating values using a formula 21 Solving equations 22 Solving simultaneous linear equations by elimination 23 Solving simultaneous linear equations by substitution 24 Simultaneous equations challenge 25 Simultaneous equations: Worded questions 26 Solving quadratic equations 27 Cartesian coordinates 28 Linear graphs 29 Parabolas 30 Inverse proportion graphs 31 Simple interest: The accumulated amount 32 Simple interest: T he initial amount 33 Simple interest: The investment period 34 Compound interest: The accumulated amount 35 Compound interest: The initial amount 36 Compound interest: Half-yearly, quarterly or monthly 37 Profit and loss 38 Reading off the break-even point 39 Profit margin 40 Scales on maps 41 Directions and bearings 42 The Theorem of Pythagoras 43 The Theorem of Pythagoras: Advanced applications 44 The Theorem of Pythagoras: Worded questions 45 Perimeter and area of a square 46 Perimeter and area of a rectangle 47 Area of a parallelogram 48 Area of a triangle 49 Area of a trapezium 50 Area of a kite and a rhombus 51 Compound areas 52 Circumference and area of a circle 53 Compound areas involving circles 54 Perimeter and area 55 Area: Calculating a length 56 Surface area and volume of a cube and a cuboid 57 Surface area of a triangular prism 58 Volume of a triangular prism 59 Volume of a prism 60 Surface area of a cylinder 61 Volume of a cylinder 62 Surface area and volume 63 Pictograms 64 Bar graphs 65 Histograms and frequency polygons 66 Pie charts: Calculating angles 67 Pie charts: Calculating quantities 68 Broken line graphs 69 Scatter plots 70 Central tendency 71 The probability scale 72 Theoretical probability 73 Probability of an event not happening 74 Probabilities adding up to 1 75 Experimental probability 76 Listing outcomes 77 Understanding two-way tables 78 Tree diagrams 79 Answers Contents