The Mathematical CPD Library https://validator.w3.org/feed/docs/rss2.html Home News Identities Identities Quiz Laws of Indices Laws of Indices Higher Functions Functions Quiz Straight Line Graphs Working with y = mx + c Plotting Straight Line Graphs Area of Trapezia (Trapeziums) Area of trapezia Types of Number Types of Number Quiz Perimeter of Rectilinear Shapes Perimeter Prime Factor Decomposition Prime Factors Recurring Decimals Recurring Decimals Estimating Powers and Roots Estimating Powers and Roots Product Rule The Product Rule Working with standard form Working with Standard Form Surds Surds Significant Figures Significant Figures Sample Spaces Sample Spaces Frequency Trees Frequency Trees Probability Trees Probability trees Venns Venn diagrams R5 Expressing One Quantity as a Fraction of Another Expressing one quantity as a value of another R6 Using and working with ratio notation Using and working with ratio notation R8 Percentage Change Percentage Change R7 Sharing Using Ratio Sharing using ratio R9 Reverse Percentages Reverse Percentages R10 Percentage Increase and Decrease