# Rounding to Significant Figures

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Addition Without Carrying
Subtraction (Without “Borrowing”)
Multiplying by 1, 10, 100, 1000
Dividing by 1, 10, 100 and 1,000
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
Grid Method for Long Multiplication
Ratio (Sharing Questions)
Fractions of an Amount
Percentages of Amounts
Adding & Subtracting Fractions
Multiplying Fractions
Converting From Improper Fractions to Mixed Numbers
Reverse Percentages
Year 9 Mixed Numbers to Improper Fractions
Simple Proportion
BIDMAS Revision
Lattice Method for Long Multiplication
Subtracting Fractions
Factors
Adding Fractions (Level 5)
Adding Fractions (Different Denominators)
Simplifying Fractions
Fractions and Percentages
Reverse Fractions