All model answers are purely the work MathsGenie and this work has neither been seen nor verified by OCR.
Question 1: Averages: Mean, Mode and Range
Question 2: Combining Ratio, Converting Ratio to Fractions and Percentages
Question 3: Estimating, Rounding
Question 4: Multiplying Indices, Negative Indices
Question 5: Finding the Gradient of a Line, Finding the Equation of a Line, Substitution, Solving Equations
Question 6: Direct and Inverse Proportion Formula
Question 7: Forming and Solving Equations
Question 8: Speed/Velocity Time Graphs, Calculating Gradient, Calculating Area Under Graph, Converting between units
Question 9: Substitution, Finding Roots, Invervals
Question 10: Vectors, Column Vectors, Drawing Vectors
Question 11: Congruent Triangles
Question 12: Similar Shapes, Scale Factor, Trigonometry: SOHCAHTOA or Pythagoras
Question 13: Volume of a Sphere, Volume of a Pyramid, Forming and Solving Equations
Question 14: Bounds
Question 15: Repeated Percentage Change
Question 16: Box Plots, Drawing Box Blots, Comparing Box Plots
Question 17: Functions, Forming Algebraic Expressions, Forming and Solving Equations
Question 18: Misleading Charts, Similar Shapes Scale Factor for Area and Volume
Question 19: Simplifying Algebraic Fractions