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This revision guide follows edexcel Pearson schemes of learning for unit 1 higher. Topics include product rule of counting ⁠estimation ⁠using calculations ⁠HCF and LCM ⁠indices and reciprocals ⁠fractional and negative indices ⁠standard form ⁠surds ⁠rationalising denominator Each section is designed to enhance understanding and application of key mathematical concepts essential for success in higher-level mathematics.