CBSE class 10 Math exam approaching. Deleted topics: Euclid's division lemma, decimal representation of rational numbers, division algorithm for polynomials, equations reducible to linear equations, area of a triangle, proof of theorems, constructions, trigonometric ratios of complementary angles, frustum of a cone, step deviation method, coordinate geometry, right triangle theorems, surface areas and volumes, mixed problems with different solids, statistics.