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square roots pentagons expansions tournaments square grids decahedra triangles multiplaction squares calculus geometry quadratics 3d shapes factors cards partitions chalkdust crossnumber functions surds quadrilaterals prime factors albgebra time axes hexagons ave digital clocks crosswords bases perimeter triangle numbers balancing wordplay crossnumbers rectangles rugby squares regular shapes elections chocolate star numbers logic medians sums speed matrices coins number gerrymandering odd numbers floors even numbers arrows lists multiples games area percentages chess integers doubling prime numbers mean consecutive integers range dice routes shape dates cryptic crossnumbers probabilty spheres fractions sets binary complex numbers grids unit fractions probability combinatorics symmetry colouring digital products sport scales means cubics palindromes people maths median products geometric mean tangents sum to infinity circles cryptic clues polygons planes addition parabolas averages 2d shapes multiplication consecutive numbers cube numbers powers division folding tube maps xor clocks the only crossnumber menace pascal's triangle factorials integration differentiation perfect numbers determinants algebra lines graphs books square numbers neighbours angles taxicab geometry money dodecagons irreducible numbers shapes trigonometry digits polynomials dominos geometric means advent sequences remainders volume numbers indices coordinates ellipses tiling christmas proportion