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RRB Level 1 / Group D

Number System Signed Arithmetic and BODMAS: Bilingual Lesson and Practice

Learn number families, signed arithmetic and BODMAS in English and Hindi, with worked examples, a quick reference and 12 explained practice questions.

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30 Sept 2026

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A free original bilingual lesson for the Numbers and Calculation module of RRB Group D Mathematics. Learn how natural numbers, whole numbers, integers and rational numbers are related; compare signed integers; and explain arithmetic signs, grouping, powers, equal-precedence operations and division by zero. Entry checks, worked examples, an analogy, a quick reference and 12 practice questions with explained answers support step-by-step learning. This PDF covers one foundation topic, not the complete Mathematics syllabus or a full CBT simulation.

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