Ratio

Ratio

by Venus Daydayan

​Pre- Assessment

Open Ended

What do you know about ratio?

Multiple Choice

Based on the video presented, what is the important thing we need to do in writing a ratio?

• Order is important

• Combination is important

• Proper capitalization is important.

1. Find the ratio of the shaded region to the unshaded region.

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​2. Find the ratio of the shaded region to the total region.

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​3. FInd the ration of the shaded region to the unshaded region to the total region.

​Let us check if you know...

1. Find the ratio of the shaded region to the unshaded region.

​ 7:3

​2. Find the ratio of the shaded region to the total region.

​ 7:10

​3. FInd the ration of the shaded region to the unshaded region to the total region.

​ 7:3:10

​Answer:

​What is ratio?

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​ Ratio is an ordered comparison of quantities of the same kind. It can be expressed as a fraction.

A ratio a:b is in simpliest form or lowest terms if its terms are whole numbers with a GCF of 1.

​To reduce a:b in simplest form, we divide each term by the GCF of a and b or we can use the continuous division method.

Find the ratio of 420 to 600 in the simplest form.

​The GCF of 420 and 600 is 60,

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​The required ratio is 7:10

​420

Multiple Choice

Find the ratio of 1 year to 9 months in simplest form.

• 3:4

• 4:3

• 1:4

Multiple Choice

Express each ratio as a fraction in lowest term.

15:45

• $$\frac{1}{5}$$  

• $$\frac{1}{3}$$  

• $$\frac{3}{7}$$  

Multiple Choice

Express each ratio as a fraction in lowest term.

49: 35

• $$1\frac{1}{5}$$  

• $$1\frac{1}{3}$$  

• $$1\frac{2}{5}$$  

Multiple Choice

Express each ratio as a fraction in lowest term.

500 : 125

• $$\frac{5}{1}$$  

• $$\frac{4}{1}$$  

• $$\frac{2}{5}$$  

Multiple Choice

Express each ratio as a fraction in lowest term.

14 : 28

• $$\frac{1}{2}$$  

• $$\frac{1}{4}$$  

• $$\frac{1}{5}$$  

Poll

The student at Barrio San Jose held a talent show. The show featured 5 singers and 2 dancers. What is the ratio of the number os singers to the number of dancers?

• 5:2

• 2:5

• $$\frac{5}{2}$$  

• $$\frac{2}{5}$$  

​The ratio of the number of boys to the number of girls in my school is 3:5. If there are 350 girls, how many are boys?

​Let us practice solving...