Preparing for the RRB Group D 2025 exam can feel overwhelming, especially with the wide range of topics in the Mathematics section. But with the right strategy and smart planning, anyone can score well—even if you’re not from a math background. This article gives you a simple and effective topic-wise preparation guide to help you tackle the Mathematics section confidently.
Understanding the RRB Group D 2025 Math Syllabus
Before diving into preparation strategies, let’s take a look at the topics included in the Mathematics syllabus for RRB Group D:
- Number System
- BODMAS
- Decimals
- Fractions
- LCM & HCF
- Ratio and Proportion
- Percentages
- Time and Work
- Time and Distance
- Simple and Compound Interest
- Profit and Loss
- Age Calculations
- Algebra
- Geometry and Trigonometry
- Mensuration
- Elementary Statistics
- Square Root
- Calendar & Clock
- Pipes & Cistern
Also Read: RRB NTPC 2025 General Intelligence & Reasoning Preparation Strategy, Check Topic Wise Strategy
Topic-Wise Preparation Strategy
1. Number System, BODMAS, Decimals, and Fractions
Why it’s important: These are the basics. You’ll use them in most other math questions.
How to prepare:
- Learn how to classify numbers (natural, whole, integers, rational, etc.).
- Master BODMAS rule for order of operations.
- Practice converting between decimals and fractions.
- Use flashcards to remember key properties and shortcuts.
2. LCM & HCF
Why it’s important: Many word problems (like time-based problems) rely on LCM or HCF.
How to prepare:
- Practice finding LCM and HCF using the prime factorization method.
- Solve at least 5 LCM/HCF problems daily from previous year papers.
3. Ratio and Proportion & Percentages
Why it’s important: These concepts are applied in problems on profit & loss, mixtures, and interest.
How to prepare:
- Understand the relationship between ratios and fractions.
- Memorize common percentage-to-fraction conversions (e.g., 25% = 1/4).
- Solve real-life based questions (e.g., discounts, elections, population increases).
4. Time and Work & Time and Distance
Why it’s important: These are scoring topics if you understand the concepts.
How to prepare:
- Learn the formula: Work = Rate × Time.
- Understand the concept of efficiency (who does how much work per day).
- For Time & Distance, practice questions involving trains, boats, and relative speed.
5. Simple and Compound Interest
Why it’s important: You’ll always get 1–2 questions from this topic.
How to prepare:
- Memorize the basic formulas:
- SI = (P × R × T) / 100
- CI = P(1 + R/100)^T – P
- Practice shortcut tricks for compound interest (especially when interest is compounded annually or half-yearly).
6. Profit and Loss
Why it’s important: These are direct application-based problems.
How to prepare:
- Understand basic terms: cost price (CP), selling price (SP), profit, loss, and discount.
- Practice with marked price and successive discounts.
- Know the percentage formula for profit/loss.
7. Algebra
Why it’s important: You’ll get 1–2 questions related to identities or equations.
How to prepare:
- Learn important identities: (a+b)^2, (a–b)^2, a^2 – b^2.
- Solve linear equations and factorization problems.
- Focus on simplification of algebraic expressions.
8. Geometry and Trigonometry
Why it’s important: Tricky for many, but manageable with practice.
How to prepare:
- Focus on basic shapes: triangle, square, rectangle, and circle.
- Learn angle properties, Pythagoras theorem, and basic trigonometric ratios (sin, cos, tan).
- Remember common values like sin 30° = 1/2, cos 60° = 1/2, etc.
9. Mensuration
Why it’s important: Area and volume questions appear often.
How to prepare:
- Memorize area and volume formulas of 2D and 3D shapes.
- Practice unit conversion (cm² to m², etc.).
- Work on word problems that mix multiple shapes.
10. Elementary Statistics
Why it’s important: Easy scoring topic.
How to prepare:
- Learn how to calculate mean, median, and mode.
- Practice questions involving bar graphs and pie charts.
11. Square Root
Why it’s important: Used in simplification and geometry questions.
How to prepare:
- Practice square roots of numbers up to 1,000.
- Use approximation techniques for non-perfect squares.
12. Calendar & Clock
Why it’s important: Logic-based, needs practice.
How to prepare:
- Learn how to find the day of a given date.
- Practice time angle problems (e.g., angle between clock hands).
- Use short tricks for questions based on “odd days.”
13. Pipes & Cistern
Why it’s important: Similar to Time & Work problems.
How to prepare:
- Practice problems with inlets and outlets working together.
- Focus on LCM method and units of water per minute/hour.
14. Age Calculations
Why it’s important: These are logical, story-based questions.
How to prepare:
- Practice problems involving present, past, and future ages.
- Use linear equations to solve problems involving age differences and ratios.
RRB Group D 2025 Math Weekly Study Timetable
| Day | Topics to Study | Practice Time | Tips |
|---|---|---|---|
| Monday | Number System, BODMAS, Fractions & Decimals | 2 hours | Focus on basics and simple calculations |
| Tuesday | LCM & HCF, Square Root, Ratio and Proportion | 2 hours | Use tricks to solve faster |
| Wednesday | Percentages, Profit & Loss, Age Problems | 2 hours | Learn formulas, solve 10+ word problems |
| Thursday | Time and Work, Pipes & Cistern | 2 hours | Use efficiency and LCM method |
| Friday | Time and Distance, Simple & Compound Interest | 2 hours | Solve both formula-based and story sums |
| Saturday | Mensuration, Geometry & Trigonometry | 2 hours | Practice area, volume, and angle sums |
| Sunday | Revision + Practice Mock Test + Calendar & Clock + Statistics | 2–3 hours | Solve one mock test + revise weak topics |
Extra Tips
- Study early in the morning or when you feel most active.
- Take short breaks after every 1 hour.
- Use previous year papers on weekends.
- Maintain a notebook for formulas and tricks.
Practice Alongside Study
Along with regular study and topic-wise preparation, it’s very important to practice mock tests and quizzes. Mock tests help improve speed, accuracy, and time management. They also show you the real exam environment, so you’re better prepared on exam day. To make it easy for learners, we’ve added practice links for each topic in the table below. Use them daily after your study sessions to test what you’ve learned.
Practice Links for RRB Group D 2025 Mathematics
