CAIE IGCSE Mathematics – Paper 26 (2025) mixed practice: standard form, rational/irrational, indices & surds, percentage change, expected value, circle theorems with tangents, ratios, cube surface area, algebra (expansion, factorisation, completing the square), functions/intersections, histograms & estimated mean.  Also includes vectors & trapezium geometry, graph sketches (y=1/x, y=7^x), cylinder–sphere displacement, recurring decimals to fractions, estimation, algebraic simplification, negative-marking score calculation, spring energy formula, and currency exchange.