This video tutorial explains how to calculate probabilities using ratios, with examples involving colored counters and biased spinners. It demonstrates how to simplify fractions and convert probabilities into decimals. The video also covers how to use given probabilities and ratios to complete probability tables. The tutorial concludes with a call to action for viewer engagement.

What is the initial ratio of red, blue, and green counters in the bag?

• 4:5:6

• 1:2:3

• 2:3:4

• 3:4:5

How many total parts are there when you add the parts for red, blue, and green counters?

• 10

• 9

• 12

• 15

What is the simplified probability of picking a red counter?

• 1/4

• 1/2

• 1/5

• 1/3

What is the simplified probability of picking a blue counter?

• 1/5

• 1/4

• 1/3

• 1/2

What is the probability of picking a green counter?

• 1/2

• 1/4

• 1/3

• 5/12

What is the probability of the spinner landing on red?

• 0.13

• 0.24

• 0.26

• 0.37

What is the ratio of the probability of landing on blue to yellow?

• 1:2

• 1:3

• 2:1

• 3:2

What is the total probability of the spinner landing on red and green?

• 0.55

• 0.61

• 0.39

• 0.45

What is the probability of the spinner landing on yellow?

• 0.13

• 0.45

• 0.26

• 0.39

What is the probability of the spinner landing on blue?

• 0.13

• 0.26

• 0.39

• 0.45