One Number As a Fraction of Another Number
(KS3, Year 7)
The LessonOne number can be expressed as a fraction of another number. Imagine there were 5 shapes (3 squares and 2 triangles). To find what fraction of the shapes are squares, you would write 3 out of 5 as a fraction:
How to Express One Number As a Fraction of Another NumberExpressing one number as a fraction of another is easy. Write the first number on top of a fraction, and the second number on the bottom of the fraction.
QuestionWhat is 45 out of 60 as a fraction?
Write 45 as the top number (called the numerator) of the fraction.
Write 60 as the bottom number (called the denominator) of the fraction.
Answer:45 out of 60 is 3⁄4 as a fraction.
Lesson SlidesThe slider below shows another real example of expressing one number as a fraction of another number. Open the slider in a new tab
What Is a Fraction?A fraction is a part of a whole number. Fractions consist of a numerator and a denominator. There are three different types of fractions:
What's in a Name?"Fraction" comes from the Latin "fractus", meaning "broken". The whole is "broken" into parts.
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