BIDMAS Revision

Dividing by 1, 10, 100 and 1,000 Multiplying by 1, 10, 100, 1000 Subtraction (Without “Borrowing”) Factors and Multiples Prime Numbers Prime Factor Decomposition HCF & LCM (By Listing) HCF & LCM (Prime Factors) Rounding Numbers (Nearest 1, 10, 100 & DP) Rounding to Significant Figures Estimating Calculations (Simple) Estimating Calculations (Harder) Related Calculations Multiplying Big Numbers & Decimals Ratio (Sharing Questions) Fractions of an Amount Percentages of Amounts Adding & Subtracting Fractions BIDMAS Revision Reverse Percentages Simplifying Surds Multiplying Surds – Technique Used to Rationalise Surds Rationalising Surds 1 Rationalising Surds 2 Index Notation 1 Index Notation 2 Index Notation 3 Index Notation 4 Index Notation 5 Index Notation 6 Index Notation 7 Trial and Improvement