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Last updated on August 5, 2025

21/10 as a Decimal

Professor Greenline Explaining Math Concepts
Professor Greenline from BrightChamps

What is 21/10 as a decimal?

21/10 as a decimal

 

Answer

 

21/10 in decimals can be written as 2.1. It is a terminating decimal, showing that it ends without repeating.

 

Explanation

 

To get 21/10 in decimal, we will use the division method. Here as 21 is larger than 10, we will perform simple division. 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 (10) will be taken as the divisor.

 

Step 2: Divide 21 by 10. Since 21 is greater than 10, it can be divided directly.

 

Step 3: 10 goes into 21 two times (2 × 10 = 20), leaving a remainder of 1.

 

Step 4: Add a decimal point to the quotient and bring down a 0 to the remainder, making it 10.

 

Step 5: 10 goes into 10 exactly once, with no remainder. This process gives us the decimal 2.1, which is a terminating decimal.

Professor Greenline from BrightChamps

Important Glossaries for 21/10 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.
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