Proportion

Proportions

By Miss Sabayton

Labelling

Write the ratios of the shaded to unshaded parts for these diagrams.

Drag labels to their correct position on the image

2 : 1

4 : 2

2 : 2

2 : 1

8 : 4

1 : 1

Multiple Choice

What is a proportion?

• A proportion is a method of measuring angles.
• A proportion is an equation that shows two ratios are equal.
• A proportion is a type of fraction.
• A proportion is a statistical average.

Drag and Drop

A proportion is an equation that shows two ratios are equal. It compares two fractions or ratios.



Example: 2 is to 4

as

​

Placeholder

is to ​

Placeholder

​

Write as proportion using fractions:​

​

Placeholder

=​

Placeholder

Drag these tiles and drop them in the correct blank above

4

8

Drag and Drop

To check whether two ratios are proportional, us​e ​

Placeholder

and/or ​

Placeholder

​ .

Drag these tiles and drop them in the correct blank above

cross-multiplication

simplify the fraction

Labelling

Complete the statements below.

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a x d

b x c

similar

means

extremes

Dropdown

When working with ratios you only use two operations

​

Select answer

and​

Select answer

Labelling

Determine whether the ratios are proportional or not.

Drag labels to their correct position on the image

equal

simplify

2 x 21

7 x 6

multiply

the same

Multiple Choice

State whether the ratios are proportional and show proof to support your answer!

 

$$\frac{3}{9}$$ and $$\frac{5}{15}$$

• No, the ratios are not proportional.
• Yes, the ratios are proportional.

Multiple Choice

State whether the ratios are proportional and show proof to support your answer!

 

$$\frac{6}{18}$$ and $$\frac{27}{81}$$

• No, the ratios are not proportional.
• Yes, the ratios are proportional.

Multiple Choice

State whether the ratios are proportional and show proof to support your answer!

 

$$\frac{4}{6}$$ and $$\frac{2}{9}$$

• No, the ratios are not proportional.
• Yes, the ratios are proportional.

Multiple Choice

State whether the ratios are proportional and show proof to support your answer!

 

$$\frac{11}{20}$$ and $$\frac{22}{40}$$

• No, the ratios are not proportional.
• Yes, the ratios are proportional.

Multiple Choice

State whether the ratios are proportional and show proof to support your answer!

 

$$\frac{57}{14}$$ and $$\frac{7}{2}$$

• No, the ratios are not proportional.
• Yes, the ratios are proportional.

Multiple Choice

What is an equivalent ratio?

• Two or more ratios with the same values
• Two or more ratios that have different values
• Two or more ratios that equal 1
• Two or more ratios that have a denominator of 1

Multiple Choice

Are the ratios $$\frac{4}{1}$$  and  $$\frac{20}{5}$$   equivalent?

• No

• Yes

Multiple Choice

Are the ratios 7 to 18 and 1 to 2 equivalent?

• No

• Yes

Multiple Choice

Are the ratios 1:2 and 4:7 equivalent?

• No

• Yes

Multiple Choice

$$\frac{10}{2}$$  Which ratio is equivalent to

• $$\frac{1}{2}$$  

• undefined 

• $$\frac{1}{5}$$  

• $$\frac{4}{2}$$  

Multiple Choice

Students at the OB School prefer tacos to pizza in a ratio of 3 to 2. If 90 students prefer tacos, how many prefer pizza?

• 60

• 120

• 90

• 100

Multiple Choice

Mason went on a fishing trip. He hooked 1 bass for every 2 catfish he caught. How many bass did he catch if he caught 14 catfish?

• 12 fish

• 10 fish

• 7 fish

• 8 fish