n/a

1. MATHEMATICS 5
WEEK 8 DAY
2

2. OBJECTIVE:
Expresses ratios in
their simplest forms.
M5NS-IIi-125

3. Put a check ( / ) if the ratios are equal and
a cross ( x ) if they are not.
3
REVIEW:

4. EXPRESSES RATIOS IN
THEIR SIMPLEST FORMS

5. Presentation title 5
In Miss Garcia’s class, there are 3
books for every 6 pupils.
How many books are intended for
the pupils?

6. Presentation title 6
Let us draw a
picture.

7. How will you express or
reduce this ratio in its
simplest form?

8. • Simplifying ratios is just the same as
reducing fractions since ratios
can be written as fractions.
• To reduce the ratio in simplest form,
find the GCF of the numbers and divide
both the number.
GCF of 3 and 6 is 3 numbers

9. • So, the simplest form
of 3:6 is 1:2

10. The term “simplest form” is the same as
“lowest terms” in ratios and fractions.
How about this ratio of 7:10? Is there a
simplest form of this ratio?

11. • 7 and 10 are numbers with no GCF or
common factor except 1.
These numbers are relatively prime
numbers.
So, the ratio 7:10 is already in its
simplest form.

12. Example 1
Study the ratios in the table carefully.

13. Match the ratios in Column A to its simplest
form in Column B. Write the
letter of your answer on the blank.

14. Identify the given ratios if equivalent or
not. Write in the box Yes if they are equal
and No if not.

15. How to express ratio in
their simplest form?

16. Direction: Answer the following
problems:
1. In a Grade V class there are
20 boys and 28 girls. What is the
ratio of the number of girls to the
number of boys? Give its
simplest form.

17. 2. In a school there are 60
teachers and 3000 pupils. Find
the ratio of the number of
teachers to the number of
pupils. What is its simplest
form?

18. 3. Ellen is 130 cm tall and Cecil
is 150 cm tall. Find the ratio of
Ellen’s height to Cecil’s height.
Reduce the ratio to its simplest
form.

19. THANK YOU