Surface Area and Probability Problems

The video covers Math 7 Unit 8 Lesson 5 on estimating probabilities. It begins with a discussion on the likelihood of events using percentages and fractions. The lesson includes a spinner activity to demonstrate sample spaces and probability outcomes, followed by an analysis of the results. A block activity is conducted to further explore probability estimation. The video concludes with a homework discussion and summary of key concepts.

If the weather forecast predicts a 20% chance of rain, how likely is it to rain?

• Unlikely

• Likely

• Very likely

• Certain

What is the probability of a tornado if the chance is 1 out of 10?

• 0.90

• 0.50

• 0.20

• 0.10

If the probability of snow is 0.85, how would you describe the likelihood?

• Impossible

• Unlikely

• Certain

• Likely

How many outcomes does spinner A have?

• 12

• 6

• 4

• 8

Which spinner has the most possible outcomes?

• Spinner D

• Spinner C

• Spinner B

• Spinner A

What is the sample space for spinner D?

• 1 to 4

• 1 to 6

• 1 to 12

• 1 to 10

How many times was spinner A spun in the experiment?

• 10 times

• 12 times

• 8 times

• 5 times

Which number did not appear in spinner B's outcomes?

• 2

• 4

• 1

• 3

What fraction of spinner C's spins landed on the number 3?

• 3/10

• 4/10

• 2/10

• 1/10

What is the probability of drawing a green block from the bag?

• 1/5

• 2/5

• 3/5

• 4/5