Chapter 8 Exploring Ratios Objective Learn What is

Chapter 8: Exploring Ratios Objective: Learn: “ What is a ratio? ” Learn to compare quantities using division.

A Ratio compares two quantities. �There are 3 ways to write a ratio: as a fraction, with a colon (: ), and with the word “to”. �If we compare the numbers of boys to girls we write them as follows: 13 8 13: 8 13 to 8 This means that there are 13 boys and 8 girls. You read all ratios as “ 13 to 8”. Example: In a group of 6 th graders, 16 were right-handed and 5 were left-handed. Find the ratio of right-handers to left-handers. Answer: 16 5 16: 5 16 to 5 “The ratio of right-handed to left-handed is 16 to 5. ”

Ratios can be written in Simplest Form. �If the Ratios of cats to dogs is 16 to 14, you can divide both of the numbers by a common factor to make them smaller. � For example: 16 cats to 14 dogs = 16 to 14 16: 14 16 14 (if I divide them by 2)= 8 to 7 8: 7 8 7 Your Example: Write each ratio three ways. Write in simplest form if possible. 36 shoes to 27 socks = 10 tennis to 15 golf =

Homework: Write the ratios all three ways. Re-write in simplest form if possible. 1. 3 desktops to 8 laptops. 2. 8 Samsung to 14 I-phones. 3. 25 oranges to 45 apples. 4. 21 boys to 24 girls. 5. 4 wins to 6 losses. 6. 8 dentists to 10 pediatricians. 7. 36 balls to 48 bats. 8. 50 Barca to 35 Real Madrid. 9. 4 fish to 10 turtles. 10. 8 exams to 2 projects.