# Calculation King | 30 Days Calculation Mastery | Gagan Pratap Sir | Bilingual | Edition 2025 | For SSC CGL, CHSL, CPO, MTS, CDS & GD
> 30-day speed calculation program by Gagan Pratap Sir — bilingual, exam-focused, SSC-ready.

## Details

- **Author:** Gagan Pratap Sir
- **Publisher:** Champion Publication
- **Language:** Bilingual (Hindi + English)
- **Edition:** 2025
- **Year:** 2025
- **Pages:** 374
- **ISBN:** 8197808082
- **File Size:** 94.2 MB
- **Difficulty:** intermediate
- **Price:** Free
- **URL:** https://www.allcompetitionclasses.co.in/books/calculation-king-30-days-mastery-gagan-pratap-sir-bilingual-2025

## Exam Relevance
- SSC CGL Tier I
- SSC CGL Tier II
- SSC CHSL Tier I
- SSC CHSL Tier II
- SSC CPO
- SSC MTS
- SSC GD Constable
- SSC Selection Post
- CDS
- RRB NTPC
- RRB Group D
- State PSC
- Delhi Police

## Subjects & Topics
- Arithmetic
- Number System
- Percentage
- Ratio and Proportion
- Speed Distance Time
- Profit and Loss
- Time and Work
- Square Roots
- Cube Roots
- Fraction Simplification
- Mental Math
- Quantitative Aptitude
- Mathematics
- Competitive Exam Preparation

## Tags
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## Full Description
If maths has ever cost you marks in an exam — not because you didn't know the concept, but because you ran out of time — this book was made for you. Calculation King by Gagan Pratap Sir is a 30-day structured program that trains your brain to calculate faster, smarter, and with far fewer errors. By the time you finish it, you won't just know the shortcuts — you'll actually use them automatically under exam pressure. That's the real difference.

The book follows a day-by-day format built for government exam aspirants. Each day targets a specific area of calculation: from the basics of number systems and fraction simplification to percentage tricks, ratio manipulation, square and cube roots, and BODMAS-level mental math. You get chapter-wise tricks for arithmetic topics like profit & loss, time & work, and speed-distance-time — all explained through the lens of fast calculation rather than just concept. Solved examples are used throughout, not as decoration but as the actual teaching vehicle. Practice sets at the end of each chapter follow real exam MCQ patterns, including previous year questions from SSC and equivalent exams. The bilingual format — Hindi and English side by side — means you never have to choose between comfort and exam language. Students who think in Hindi can process faster, which matters when every second counts.

This book is best suited for students who have already covered basic maths theory and now want to shift from 'knowing' to 'doing quickly'. If you're in the intermediate stage of SSC CGL Tier-I or CHSL preparation, this fits perfectly as a speed-building supplement. That said, even someone just starting out will benefit from using it alongside a standard arithmetic textbook. It's not a first-principles book — it's a performance book.

Exam-wise, it directly covers the quantitative aptitude sections of SSC CGL (Tier I and Tier II), SSC CHSL (Tier I and Tier II), SSC CPO, SSC MTS, SSC GD Constable, and SSC Selection Post. The content also maps well to CDS mathematics, which tests similar arithmetic and calculation skills. For Railway exams like RRB NTPC and RRB Group D, the arithmetic calculation component is directly relevant. Students preparing for State Police and State PSC exams that include a quant section will also find the shortcuts and daily drills useful.

Gagan Pratap Sir is one of the most followed maths educators in India's competitive exam space. He runs the YouTube channel Gagan Pratap Maths with over 5 million subscribers, teaches on the Careerwill app, and is also a TEDx speaker. He cleared SSC CGL himself, chose teaching over a government job, and built his reputation entirely through the quality of his explanations — not marketing. His style is known for being direct, logic-first, and full of mental shortcuts that actually stick. He has written multiple books including the popular Maths Concept King and the Complete Class Notes Arithmetic series. Thousands of students who have cracked SSC exams credit his approach for their speed improvement in the quant section.

This PDF version is compressed for smooth loading on mobile devices — no lag, no frustration. You can read it on your phone, tablet, or laptop, and the bilingual layout makes it easy to follow on smaller screens. No need to carry the physical book everywhere.

If you've been skipping calculation practice because it felt boring or repetitive, this format will change that. Thirty focused days is a real timeline, not a marketing line. Pick it up, start Day 1 tonight, and see where you are by the end of the month.

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