Fractional part

High school (ages 12+)
Mathematics & Numbers

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Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/fractional-part

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the mathematical definition?{x} = x - ⌊x⌋, where ⌊x⌋ is the floor function
2. What is the historical term for logarithm's fractional part?Mantissa, introduced by Henry Briggs
3. What is the fractional part of a number?The fractional part is the part of a number that comes after the whole number. It is found by subtracting the largest whole number that is not bigger than the original number. It is written as {x} or frac(x).
4. How do you find the fractional part of 7.38?First find the floor of 7.38, which is 7. Then subtract 7 from 7.38, giving 0.38. So the fractional part of 7.38 is 0.38.

Floor Function (⌊x⌋): The greatest integer less than or equal to a given real number x.
Radix Point: The symbol (usually a dot or comma) separating the integer part from the fractional part of a number.
Mantissa: The fractional part of a logarithm, historically significant for calculation.
Positional Numeral System: A system where the value of a digit depends on its position (e.g., the decimal system).