Proper fraction的意思
"Proper fraction" is a term used in mathematics to describe a fraction where the numerator (the top number) is less than the denominator (the bottom number). In other words, a proper fraction is less than 1.
For example:
- 2/3 is a proper fraction because 2 is less than 3.
- 5/7 is a proper fraction because 5 is less than 7.
In contrast, an "improper fraction" is a fraction where the numerator is equal to or greater than the denominator, meaning it is greater than or equal to 1.
For instance:
- 3/2 is an improper fraction because 3 is greater than 2.
- 7/7 is an improper fraction because 7 is equal to 7.
When working with fractions, it's often necessary to convert improper fractions to mixed numbers (a whole number plus a proper fraction) or to convert between improper fractions and whole numbers.