A free original bilingual review to use after the five Numbers and Calculation lessons: number system and BODMAS; factors, divisibility and prime factorisation; HCF and LCM; fractions and decimals; and squares and square roots. The PDF contains 20 fresh multiple-choice questions, an answer key and complete English and Hindi explanations. Use it as untimed learning practice: one mark for each correct answer, no negative marking and no pass cutoff. Its topic distribution supports learning coverage and does not predict exam weighting. It reviews this module only, not the full RRB Mathematics syllabus or a complete CBT paper.