Colorful House of Math logo
Log in

An Important Trick


Mathematics is full of little tricks that make calculations and problem solving easier for us. A very important trick when working with fractions is that all integers can be written as fractions by putting the number 1 in the denominator. You already know that a number divided by 1 is the number itself.

Rule

The Trick

Any number a becomes a fraction when you divide it by 1.

a = a 1

Example 1

Here are three examples of integers written as fractions by setting the number itself in the numerator and 1 in the denominator:

25 = 25 1 3 = 3 1 7 = 7 1

25 = 25 1 3 = 3 1 7 = 7 1

Note! A fraction is reduced when the numerator and denominator no longer have any common factors other than 1.

Bootcamps

Want to watch animated videos and solve interactive exercises about fractions? Click here to try Bootcamps!

Want to know more?Sign UpIt's free!
White arrow pointing to the LeftPrevious entry
Activities 2
Next entryWhite arrow pointing to the right
Plus and Minus (Equal Denominators)