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Last updated on May 26th, 2025

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28/40 as a Decimal

Professor Greenline Explaining Math Concepts

It is a simple question on decimal conversion. Firstly, we have to learn fractions and decimals. A fraction represents a part of the whole. It has two parts: the numerator (the number on the top), here 28, which represents how many parts out of the whole. The denominator (the number below) shows how many parts make the whole, here it is 40. A decimal is a way to represent a number that is not whole, using a (.) or a decimal point to separate the whole part from the fractional part. The numbers to the left of the decimal point represent the whole, and those to the right represent the fractional part.

28/40 as a Decimal for Thai Students
Professor Greenline from BrightChamps

What is 28/40 as a decimal?

28/40 as a decimal

 

Answer

 

28/40 in decimals can be simplified by first reducing the fraction to its simplest form. The greatest common divisor of 28 and 40 is 4. Therefore, 28/40 simplifies to 7/10. Thus, it can be written as 0.7 as a decimal.

 

Explanation

 

To convert 28/40 to a decimal, we use the division method. Let's see the step-by-step breakdown of the process:

 

Step 1: Simplify the fraction 28/40. The greatest common divisor of 28 and 40 is 4.

 

Step 2: Divide both the numerator and the denominator by 4. This gives us 7/10.

 

Step 3: Now, convert 7/10 to a decimal. We can do this by dividing the numerator by the denominator: 7 ÷ 10 = 0.7

 

The answer for 28/40 as a decimal will be 0.7.

Professor Greenline from BrightChamps

Important Glossaries for 28/40 as a decimal

  • Fraction: A numerical quantity that is not a whole number, representing a part of a whole.

 

  • Decimal: A number that uses the base ten and includes a decimal point to separate the whole part from the fractional part.

 

  • Numerator: The top part of a fraction, indicating how many parts of the whole are being considered.

 

  • Denominator: The bottom part of a fraction, showing how many parts make up a whole.

 

  • Simplifying Fractions: The process of reducing a fraction to its simplest form by dividing both the numerator and denominator by their greatest common divisor.
Professor Greenline from BrightChamps

About BrightChamps in Thailand

At BrightChamps, math questions go beyond simple problems—they open the door to endless opportunities! Our goal is to help children throughout Thailand master important skills, such as today’s focus on the 28/40 as a Decimal, with a special focus on decimal conversions—in a way that’s engaging, fun, and simple to follow. Whether your child is calculating the speed of a roller coaster at Dream World, tracking scores at a local football match, or managing their allowance to buy the latest gadgets, solid math skills give them the confidence to handle everyday tasks. Our lessons are designed to be interactive and enjoyable. Because children in Thailand have different learning styles, we customize our teaching to suit each one. From the busy streets of Bangkok to the tropical islands of Phuket, BrightChamps brings math to life, making it relatable and exciting across Thailand. Let’s make decimal conversions a fun part of every child’s math journey!
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