Exploring Writing Ratios in Lesson 21

The video tutorial explains how to write ratios in three different ways using examples of zoo animals. It covers comparing the number of monkeys to elephants, elephants to the total number of animals, lions to giraffes, and giraffes to the total number of zoo animals. Each example demonstrates how to express ratios as 'a to b', 'a:b', and 'a/b'.

What is a ratio?

• A comparison of two quantities

• A type of animal

• A mathematical operation

• A fraction

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

How many monkeys are there in the zoo?

• Seven

• Four

• Six

• Five

Tags

CCSS.1.NBT.A.1

What is the ratio of monkeys to elephants?

• 5 to 6

• 6 to 7

• 6 to 5

• 5 to 7

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

How many elephants are there in the zoo?

• Eight

• Five

• Six

• Seven

Tags

CCSS.1.NBT.A.1

What is the total number of animals in the zoo?

• Thirteen

• Twelve

• Eleven

• Ten

Tags

CCSS.1.NBT.A.1

What is the ratio of elephants to the total number of animals?

• 7 to 11

• 5 to 11

• 6 to 11

• 8 to 11

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

How many lions are there in the zoo?

• Six

• Eight

• Seven

• Nine

Tags

CCSS.1.NBT.A.1

What is the ratio of lions to giraffes?

• 6 to 3

• 7 to 3

• 8 to 3

• 9 to 3

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

What is the ratio of giraffes to the total number of zoo animals?

• 2 to 10

• 3 to 10

• 4 to 10

• 5 to 10

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2