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Last updated on May 26th, 2025

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400 as a decimal

Professor Greenline Explaining Math Concepts

Understanding decimal representation is straightforward. A decimal represents a number using a base ten system, which includes a decimal point to distinguish the whole part from the fractional part. In this context, though, we are discussing whole numbers like 400, which can be directly represented as a decimal without any fractional component. The decimal point is followed by zero, indicating there is no fractional part.

400 as a decimal for Canadian Students
Professor Greenline from BrightChamps

What is 400 as a decimal?

400 as a decimal

Answer

 

400 as a decimal is written as 400.0. It is a terminating decimal, meaning it does not repeat infinitely.

 

Explanation

 

To express 400 as a decimal, we simply place a decimal point followed by a zero, indicating that there are no fractional parts:

 

Step 1: Identify the whole number, which is 400.

 

Step 2: As there are no fractional components, append ".0" to the whole number.

 

Step 3: The result is 400.0, a terminating decimal.

Professor Greenline from BrightChamps

Important Glossaries for 400 as a decimal

  • Whole Number: A number without any fractional or decimal component.
     
  • Decimal: A number expressed using the base ten, including a decimal point to separate the whole number from any fractional part.
     
  • Terminating Decimal: A decimal number that has a finite number of digits after the decimal point.
     
  • Decimal Point: The dot used in decimal numbers to separate the whole part from the fractional part.
     
  • Fractional Part: The part of a decimal number that comes after the decimal point, representing a portion of a whole.
Professor Greenline from BrightChamps

About BrightChamps in Canada

At BrightChamps, math questions are more than just calculations—they’re pathways to new possibilities! We aim to help children all over Canada build key skills, such as today’s focus on the 400 as a decimal with an emphasis on decimal conversions—taught in an engaging, fun, and clear manner. Whether your child is figuring out how fast a roller coaster moves at Canada’s Wonderland, keeping score during a hockey game, or managing their allowance for gadgets, strong math skills give them confidence for everyday situations. Our engaging lessons are designed to be easy and enjoyable. Since children in Canada learn in diverse ways, we customize our teaching to match their needs. From the vibrant streets of Toronto to the stunning scenery of British Columbia, BrightChamps makes math come alive, making it exciting and relevant across Canada. Let’s turn decimal conversions into a fun part of every child’s math experience!
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