Lesson 1 Ratios Pratice

What is a Ratio?

• Is a comparison of two quantities

• To multiply two fractions

• Strictly a fraction

• Two decimals that can be multiplied

If there are 5 boys and 7 girls, write the ratio of girls to boys.

A bag of marbles comes with 3 blue marbles, 2 red marbles, and 5 yellow marbles. What is the ratio of red to yellow?

In the fruit bowl there are 4 apples, 2 bananas, and 5 pears. What is the ratio of ALL fruit to pears?

Which represents the relationship of oranges to fruit?

• 2:6
• 2:4
• 4:6
• 4:2

Tell if the ratio is part-to-part or part-to-whole.
4 apples to 3 oranges

• Part-to-Part
• Part-to-Whole

3 ways to write a ratio is.....

• read, write, demonstration
• to solve
• using to, using a colon, and as a fraction
• very important

A ratio can be written as all the ways below EXCEPT which one?

• 3=4

• 3:4

• 3 to 4

There are 13 boys and 10 girls in the classroom.  What is the ratio of boys to girls?

• 10 to 13
• 23 to 13
• 13 to 10
• 23 to 10

The pet shop has 2 dogs, 4 cats, and 5 hamsters. What is the ratio of dogs to all pets?

• 2:4
• 2:5
• 2:11
• 11:2