Short Tricks to Remember Ratio to Percentage Table Part 1

Duration: 9 min

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Inside: a video lesson and guided study material.

Module outline

  1. TCS One Shot Free Videos & Notes: TCS Preparation
  2. Numerical Ability (Foundation Section): Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Powers and Exponents (Surds and Indices), Algebra, Probability, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Mensuration and Geometry, Mental Ability, Age Problems, Statistics, Arithmetic, Partnership, Speed Mathematics and Basic Mathematics
  3. Reasoning Ability (Foundation Section): Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Crypt Arithmetic, Venn Diagram, Data Arrangement, Inequality, Analogy, Ranking, Order and Sequence, Logical Sequence Of Words
  4. New Pattern-Verbal Ability (Foundation Section): Sentence Completion (Fill in the blanks), English Writing Ability
  5. Old Pattern-Verbal Ability (Foundation Section): Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Pronoun, Preposition, Articles, Direct and Indirect Speech, Conjunction, Modals, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Verbal Analogy (Word Based Analogy), Active Passive Voice (Voice), Determiner, Facts, Inference and Judgements, Adverb, Cloze Test (Cloze Passage), Sentence Construction, Verb
  6. Advanced Quantitative Ability: TCS NQT Advanced Quantitative Ability
  7. Advanced Reasoning Ability: TCS NQT Advanced Reasoning Ability
  8. Advanced Coding: Coding Questions by Yash Sir, C Programming by Yash Sir, Python for Placements by Yash Sir, DSA using Python, Object Oriented Programming (OOPS), Programming in C++, Java
  9. TCS Full Length Mock Test:
  10. TCS Interview & Resume Prep: MR & HR Interview Preparation, TCS Interview Preparation, Mock Interview, Interview Recordings, Resume Preparation, Resume Review
  11. Mega Test:
  12. Grand Test:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video, presented by Yash Jain, serves as a comprehensive guide to converting ratios into percentages. The lecture begins with an introduction to the topic, followed by a detailed breakdown of a "RATIO TO PERCENTAGE TABLE". The instructor systematically explains how to derive percentage values for common fractions, emphasizing memorization techniques for powers of 2 and other significant denominators. The visual aids include a chalkboard-style presentation and a structured table listing fractions from 1/1 down to 1/37, alongside their precise percentage equivalents. The instructor uses board writing to demonstrate calculation steps, such as multiplying fractions by 100, and highlights specific patterns to aid student retention for competitive exams. The video is designed to help students quickly recall percentage values without performing long division during tests.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card reading "PERCENTAGE" featuring falling dice, transitioning to a chalkboard slide titled "PERCENTAGES - By YASH JAIN". The instructor introduces the core concept using a "RATIO TO PERCENTAGE TABLE". He demonstrates the fundamental conversion method by writing "1/1 x 100" and "1/3 x 100" on the board. He explicitly calculates 1/3 as 100/3, resulting in 33.33%. The table lists key ratios: 1/1 (100%), 1/2 (50%), 1/3 (33.33%), 1/4 (25%), 1/5 (20%), 1/8 (12.5%), 1/16 (6.25%), and 1/32 (3.125%). He circles the powers of 2 to emphasize the halving pattern. The table has two columns: "RATIO" and "CORRESPONDING PERCENTAGE".

  2. 2:00 – 5:00 02:00-05:00

    The instructor continues analyzing the table, focusing on the relationship between fractions and their percentage values. He writes "1/6 = 16.67%" and "1/7 = 14.2857%" on the board to show non-terminating decimals. He highlights the reciprocal relationship between 1/9 and 1/11, writing "9 <-> 11" and circling 1/9 (11.11%) and 1/11 (9.09%). He also discusses 1/12, writing "1/12 = 8.33%" and noting that 1/8 is 12.50%. The visual focus remains on the table, with the instructor circling specific entries like 1/8, 1/9, 1/11, and 1/12 to reinforce their importance. He uses arrows to connect related values.

  3. 5:00 – 8:59 05:00-08:59

    The final segment covers a list of less common fractions found in the table. The visible entries include 1/25 (4%), 1/26 (3.84%), 1/27 (3.70%), 1/28 (3.56%), 1/29 (3.42%), 1/30 (3.33%), and 1/37 (2.70%). The instructor explains that 1/25 equals 4% because 100 divided by 25 is exactly 4. He briefly mentions the values for 1/27 and 1/37. The lecture concludes with a black screen displaying "THANKYOU FOR WATCHING" in orange and white text. The table continues to list fractions like 1/25, 1/26, 1/27, 1/28, 1/29, 1/30, and 1/37. The instructor points to these values to ensure students note them down for future reference.

The lesson progresses logically from basic fractions to more complex ones, building a reference table for quick mental math. By starting with powers of 2 and moving to prime denominators, the instructor provides a structured approach to mastering percentage conversions. The use of visual cues like circling and board writing reinforces key values, making the content accessible for exam preparation. The video effectively bridges the gap between theoretical calculation and practical memorization, ensuring students have a robust toolkit for solving percentage problems efficiently.

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