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Last updated on May 26th, 2025

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21% as a decimal

Professor Greenline Explaining Math Concepts

It is a simple question on decimal conversion. Firstly, we have to learn about percentages and decimals. A percentage represents a part out of 100, expressed with the symbol %. A decimal is a way to represent numbers that are not whole, using 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.

21% as a decimal for Saudi Students
Professor Greenline from BrightChamps

What is 21% as a decimal?

21 percent as a decimal

 

Answer

 

21% as a decimal is written as 0.21. This is not a recurring decimal, as it terminates after two decimal places.

 

Explanation

 

To convert 21% to a decimal, follow these steps:

 

Step 1: Understand that the percentage is a fraction out of 100. So, 21% is equivalent to 21/100.

 

Step 2: Divide the numerator (21) by the denominator (100) to convert it to a decimal.

 

Step 3: Perform the division 21 ÷ 100 = 0.21.

 

The answer for 21% as a decimal is 0.21.

Professor Greenline from BrightChamps

Important Glossaries for 21% as a decimal

  • Percentage: A numerical representation out of 100, denoted by the % symbol.

 

  • 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.

 

  • Terminating Decimal: A decimal that ends and does not repeat infinitely.
Professor Greenline from BrightChamps

About BrightChamps in Saudi Arabia

At BrightChamps, math questions are more than just sums—they unlock a world of possibilities! Our mission is to guide children across Saudi Arabia in mastering vital skills, including today’s focus on the 21% as a decimal with a special focus on decimal conversions—in a lively, enjoyable, and easy-to-understand manner. Whether your child is figuring out how fast a roller coaster moves at Riyadh’s Al Hokair Land, tracking scores at a local football match, or managing their allowance for gadgets, strong math skills boost their confidence for everyday challenges. Our interactive lessons are both fun and simple to follow. Since children in Saudi Arabia learn in many ways, we tailor our teaching to each child’s unique style. From the bustling streets of Riyadh to the historic sites of Jeddah, BrightChamps makes math come alive, making it relatable and exciting throughout Saudi Arabia. Let’s make decimal conversions a fun part of every child’s math adventure!
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