2. Ratio – is a comparison of two or more
numbers or quantities.
• 4 apples to 8 avocados
- 4:8 or Four is to eight or
4
8
-
4
8
÷
4
4
=
1
2
or 1:2 is the equivalent ratio
- Equivalent ratio are obtained by reducing the ratio
to lowest terms by getting the GCF.
3. Colon Form Fraction Form
4:8
4
8
2:4
2
4
1:2
1
2
The first and second numbers refer to the
first and second quantities, respectively. Thus,
4:8 is different from 8:4
The colon (:) and fraction bar ( ̶ ) are both
read as “is to”.
The ratio can be written in colon form and
in fraction form.
4. Example:
The number of girls in the room are 12 and
the boys are 10. What is the ratio of
girls to boys?
girls : boys = 12:10 or
12
10
12
10
÷
2
2
=
6
5
