By : Juanita M. Pantaleon

Naming and Writing Ratios

Pray

Kindly check your seatmates

if they are present

Flash Card time!

The story of the Ten Little

Pigs

0How did we get all the number of pigs?

1. How many pigs live in a house of straw and sticks?

2. How many pig lives at the house of bricks?

Let us compare the number of the pigs living in a house of straw and stick to the number of pig living in the bricks.

to

1. How many pigs went at the house of cement?

2. How many pig lives at the house of cement?

Let us compare the number of pigs that went in the house of cement to the number of pigs who lives in the house of cement.

5 pigs run at the house of titanium where there are 2 pigs living in there.

What is the ratio of the pigs that run into the house of titanium to the number of pigs that are living in the house of titanium?

5 to 2

to

A ratio is a comparison of

two quantities or given sets of

objects.

We can write ratio in two ways

Colon 4:10

Fraction4/10

1. Noemi has 18 tiger’s eye marble Gail has 15 agate marbles. What is the ratio of Noemi’s marbles to Gails?

2. Laura ran 2 kilometres in 25 minutes. What is the ratio of time to distance?

3. Candies cost 2 for 3 pieces. What is the ratio of 3 pieces of candies to the total cost?

Time’s Up

There are 7 boys and 8 girls playing volleyball.

07 to 8 08 to 1507 to 150Colon and Fraction form

3 books, 5 bags

03:5 or 3/5

10 candies, 2 chocolate bars

02:10 or 2/10

7 boys, 9 girls

09:7 or 9/7

In an all-girls class of 45 pupils, 12 wore black shoes 17

wore brown shoes and 16 wore rubber shoes.

012:17 or 12:17017:16 or 17/16016:17:12 or 16/17/12

Ratios can also be defined as a

comparison of 2 or more quantities.

2 ball pens to 3 notebooks to 5 pencils

2:3:5 2/3/5

Write the following ratio in two ways.

1. 3 dogs, 8 cat, 4 mouse2. 6 forks,12 spoon, 15 knives.3. 5 books, 14 paper, 12 pencils

Assignment

In a Field trip by the Grade V class, 10 children took the caterpillar ride.15 took the merry-go-round, 3 took the

Condor drive, 5 took the roller coaster and the rest just

walked around. If there are 35 pupils in the grade V class, express the following ratio.