# The Maths Hack Book — Calculation Ka Gurumatra (Bilingual) for SSC/Bank/Railway
> Speed calculation tricks by a 5-time SSC CGL Inspector — bilingual, exam-ready, mobile-friendly.

## Details

- **Author:** Inspector Mohit Goyal
- **Publisher:** Mohit Goyal
- **Language:** English
- **Edition:** 2025 Bilingual Edition
- **Year:** 2025
- **Pages:** 150
- **ISBN:** N/A
- **File Size:** 46.3 MB
- **Difficulty:** intermediate
- **Price:** Free
- **URL:** https://www.allcompetitionclasses.co.in/books/the-maths-hack-book-calculation-ka-gurumatra-bilingual-for-sscbankrailway

## Exam Relevance
- SSC CGL
- SSC CHSL
- SSC MTS
- SSC CPO
- SSC GD Constable
- IBPS PO
- IBPS Clerk
- SBI PO
- SBI Clerk
- RRB NTPC
- RRB Group D
- RRB ALP
- Delhi Police
- UP Police Constable
- UP Police SI
- DSSSB
- CRPF
- CISF
- CDS
- NDA
- State PSC Prelims
- CTET
- All Central and State Government Exams

## Subjects & Topics
- Fast Calculation Techniques
- Number System
- Multiplication Shortcuts
- Squaring and Cubing
- Percentage and Ratio
- Data Interpretation
- Profit and Loss
- Time and Work
- Speed Distance Time
- Vedic Mathematics
- Fraction to Percentage Conversion
- Square Roots and Cube Roots
- Mathematics
- Competitive Exam Preparation
- Speed Maths

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## Full Description
Imagine sitting in the exam hall and calculating a three-digit multiplication in under 4 seconds — no rough work, no calculator. That is exactly what The Maths Hack Book trains you to do. Inspector Mohit Goyal has packed years of exam-hall experience into this one book, and if you are serious about cracking any government exam that tests mathematics under time pressure, this is the book your preparation has been missing.

The book is built around one core idea: calculation speed is a skill, not a talent. It opens with the foundational number sense — digit sum tricks, base method multiplication, and unit digit patterns — before moving into the methods that actually save time in competitive papers. You get dedicated sections on fast addition and subtraction using left-to-right processing, Vedic-style multiplication shortcuts for 2-digit and 3-digit numbers, rapid squaring techniques for numbers near bases (50, 100, 250), cube roots and square roots by inspection, and fraction-to-percentage conversion on the fly. The percentage and ratio section alone is worth the read — it shows you how to convert almost any DI (Data Interpretation) question into a mental calculation inside 30 seconds. There are also focused chapters on time and work shortcuts, pipe and cistern hacks, speed-distance-time approximation methods, and profit-loss percentage calculations using the multiplier approach.

Because the book is bilingual — explanations run in both Hindi and English on the same spread — you do not lose any nuance whether you are more comfortable in Devanagari or Roman script. That dual-language layout is rare in calculation books at this price point and makes it genuinely accessible to students from UP, Bihar, Rajasthan, MP, and every Hindi-belt state without making English-medium students feel out of place.

Who is this for? Honestly, anyone who has looked at a mock test scoresheet and felt that the math section ate up too much time. It is not a theory book — if you are looking for NCERT-style conceptual explanations of why a formula works, look elsewhere. This is for the student who already understands the basics and now needs to execute them at exam speed. That puts it squarely in the sweet spot for SSC CGL (Tier 1 and Tier 2), SSC CHSL, SSC MTS, SSC CPO, SSC GD Constable, IBPS PO, IBPS Clerk, SBI PO, SBI Clerk, RRB NTPC, RRB Group D, RRB ALP, Delhi Police, UP Police Constable and SI, DSSSB, CRPF, CISF, CDS, and all State PSC preliminary exams where quantitative aptitude is on the paper.

Mohit Goyal is not a career author — he is a working Police Inspector who cleared SSC CGL five times. He built his calculation system by actually sitting in those papers, identifying where candidates lose time, and reverse-engineering faster routes. That practitioner background shows in every chapter. There are no filler exercises added just to pad page count; everything points toward one outcome — faster, more accurate answers on paper day.

The PDF available here is compressed and optimised for mobile reading. It loads fast even on a 4G connection, the text stays sharp when you zoom into worked examples, and the bilingual layout renders cleanly on both Android and iOS PDF readers. No broken fonts, no garbled Devanagari — just the book as it was meant to be read.

Download it, keep it on your phone, and run through one technique per day during your commute. A month of that and your calculation speed will not look the same. Give it a shot.

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