Trial and Improvement

Dividing by 1, 10, 100 and 1,000 Multiplying by 1, 10, 100, 1000 Subtraction (Without “Borrowing”) Addition Without Carrying 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) Multiplying Big Numbers & Decimals Grid Method for Long Multiplication Ratio (Sharing Questions) Fractions of an Amount Percentages of Amounts Adding & Subtracting Fractions BIDMAS Revision Simple Proportion Lattice Method for Long Multiplication Subtracting Fractions Trial and Improvement