Home » Math » Math : Conversion of Decimals to Fractions, and Percentages – Lesson 2

CSE Application Form
Copyright © 2017 ReviewerCivilServiceExam.com. Unauthorized use and/or duplication of any site material without express and written permission from this site’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to ReviewerCivilServiceExam.com with appropriate and specific direction to the original content.

Like Us On Facebook

Math : Conversion of Decimals to Fractions, and Percentages – Lesson 2

This lesson is part of the Lesson on Conversion Series. Converting Decimals to Fractions, and/ or Percentages are usually part of questions on numerical ability.You may also need this skill when dealing with word problems involving ratio and proportion, and money problems involving discounts, interest, and profit.

Before we go on with our lesson, let me again remind you some basic points to remember when converting Fractions, Decimals, and Percent:

  • In a fraction, the top number is the Numerator and the bottom number is the Denominator.
  • Be careful when counting the decimal places. Here, decimal place refers to the number of digits to the right of a decimal point. So, in 0.25, 25 has two decimal places; in 0.001, 1 has three decimal places; in 0.058, 58 has three decimal places; and in 0.06, 6 has two decimal places.
  • The number to the left of the decimal point is the integer. The number to the right of the decimal point is the fractional part.
  • ‘Percent’ is a number or ratio expressed as a fraction of 100.

Converting a Decimal to a Fraction:

  1. Find the numerator: The number that you have without the decimal point is the numerator.
  2. Find the denominator: Count the decimal places (remember what I taught you earlier). If there is only one decimal place, the denominator is 10. If there are two decimal places, the denominator is 100. If there are three places, the denominator is 1000. If you can see the pattern, it’s 1+ the number of zeroes depending on the decimal places.
  3. If there is a number to the left of the decimal point (an integer), just attach it to the resulting fraction afterwards.


  1. 0.25 = ?
    Find the numerator: 25
    Find the denominator: 0.25 = two decimal places = two zeroes = 100
    Thus 0.25 = 25/100
  2. 1.33 = ?
    Remove the integer (The integer is 1)
    Find the numerator: 33
    Find the denominator: 0.33 = two decimal places = two zeroes = 100
    Thus 0.33 = 33/100
    Attach the integer, Thus,1.33 = 1 33/100

Converting a Decimal to a Percent:

  1. Simply move the decimal point two places to the right
  2. Attach a percentage sign.


  1. 0.25 = 25%
  2. 0.08 = 08 % or 8%
  3. 0.9 = 0.90 = 90%
  4. 1.43 = 143%

The Lesson Series on Conversion


Leave a comment

Your email address will not be published. Required fields are marked *

Time limit is exhausted. Please reload the CAPTCHA.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

AVAIL OF CSE SUPERPREP 1! The Ultimate Civil Service Exam Reviewer CSE Superprep 1 CSE Superprep 1 CSE SUPERPREP 1: TEXTBOOK-type, not the usual Q & A, packed with Tips, Techniques, Lessons, Examples with Detailed Explanations, Unit Tests, and a FULL 170-item MOCK EXAM in ACTUAL Civil Service Exam FORMAT! Effective Tips in Passing the Civil Service Exam

About the Author

I'm a Journalism graduate of the University of the Philippines - Diliman and I'm currently taking up units in Professional Education courses. I have written for various blogs, websites, and magazines in the past. Right now, I work as a freelance eBook writer and a mobile app developer.

While I was managing a fledgling online business and being a full-time mom to my four kids - Yana, Yshi, Yza and Vincent Jr., I took the Career Service Examination - Pencil and Paper Test - Professional Level (CSE-PPT- Prof) for the first time in December 2015. I passed and I got lucky enough to be among the Top 10 examinees in my batch, 3rd in the National Capital Region.