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Last updated on May 26th, 2025

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21/100 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 (number on the top) here, 21 represents how many parts out of the whole. The denominator (number below) shows how many parts make the whole, here it is 100. A decimal is a way to represent the number that is not whole, using a (.) or a decimal point to separate the whole part from the fraction part. The numbers to the left of the decimal point represent the whole, and those to the right represent the fractional part.

21/100 as a Decimal for Bahraini Students
Professor Greenline from BrightChamps

What is 21/100 as a decimal?

21/100 as a decimal

 

 

Answer

21/100 in decimal form can be written as 0.21. It is a terminating decimal, meaning it does not repeat infinitely.

 

Explanation

To convert 21/100 to a decimal, we will use the division method. Since 21 is smaller than 100, we will use the decimal method, which will give us 0.21. Let's see the step-by-step breakdown of the process:

 

Step 1: Identify the numerator and denominator because the numerator (21) will be taken as the dividend and the denominator (100) will be taken as the divisor.

 

Step 2: As 21 is smaller than 100, it can't be divided to give a whole number quotient directly, so we will use decimals.

 

Step 3: By adding a decimal point in the quotient, we can proceed with the division, turning the situation into 210 being divided by 100.

 

Step 4: 100 goes into 210 two times, so 2 is written in the quotient place, which makes 2 × 100 = 200. Subtracting 200 from 210 gives 10.

 

Step 5: Bring down another 0 in the dividend place to make it 100, and repeat the division process.

 

Step 6: 100 goes into 100 exactly once. Write 1 in the quotient place. Now, since the remainder is 0, the process stops here.

 

The answer for 21/100 as a decimal is 0.21.

Professor Greenline from BrightChamps

Important Glossaries for 21/100 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.

 

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

About BrightChamps in Bahrain

At BrightChamps, math questions are more than just sums—they open the door to many opportunities! We’re dedicated to helping children all over Bahrain build key skills, such as today’s focus on the 21/100 as a Decimal, with a special focus on decimal conversions—in a lively, fun, and easy-to-follow way. Whether your child is figuring out the speed of a roller coaster at Bahrain’s Wahooo! Waterpark, tracking scores at a local football match, or managing their allowance for gadgets, mastering math gives them confidence to face everyday tasks. Our lessons are interactive and enjoyable. Because kids in Bahrain learn differently, we tailor our teaching to suit each child’s style. From the lively city of Manama to its peaceful beaches, BrightChamps makes math come alive, making it relevant and exciting throughout Bahrain. Let’s make decimal conversions a fun part of every child’s learning journey!
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