Understanding Ratios and Proportions

The video tutorial introduces the concept of ratios, explaining how they compare two quantities. It provides examples using star and moon beads, and discusses how to calculate the number of beads using given ratios. The tutorial also covers the terms used in ratios, such as part-to-part and part-to-whole comparisons, and explains how to find equivalent ratios using multiplication and division. The lesson concludes with a summary of the key points discussed.

What is the ratio of star-shaped beads to moon-shaped beads if there are 3 stars and 1 moon?

• 1:2

• 1:3

• 3:1

• 2:1

If a bracelet has 2 moon beads, how many star beads does it have?

• 8

• 6

• 4

• 3

How would you express the ratio of dogs to cats if there are 5 dogs for every 3 cats?

• 8:5

• 5:8

• 3:5

• 5:3

What is the ratio of floor seats to balcony seats if there are 160 floor seats and 8 balcony seats?

• 20:1

• 1:20

• 16:1

• 1:16

What is an equivalent ratio to 3:2 if you multiply both terms by 4?

• 8:12

• 9:6

• 6:4

• 12:8

How many cups of apple juice are needed if you want to make four times the original recipe of 3 cups cranberry juice to 2 cups apple juice?

• 6

• 12

• 10

• 8

If you have 4 roses and 6 carnations in a bouquet, what is the ratio of roses to carnations?

• 4:6

• 6:4

• 3:2

• 2:3

What is the simplest form of the ratio 10:12?

• 10:12

• 6:5

• 5:6

• 12:10

If there are 15 cats in an apartment complex, how many dogs are there if the ratio of dogs to cats is 1:5?

• 3

• 5

• 15

• 10

If you multiply the ratio 4:7 by 3, what is the new ratio?

• 7:4

• 12:21

• 4:21

• 21:12