12/6 Classwork

Front

What is the formula to calculate the rate of speed?

Back

Speed = Distance / Time

Front

If a golf ball travels 434 feet in 7 seconds, what is its speed?

Back

62 feet per second

Front

What does a probability of 1 in 5 mean?

Back

It means there is a 20% chance of the event occurring.

Front

What is the equivalent fraction of 1 in 5?

Back

50/250

Front

How do you calculate the percentage of a number?

Back

Percentage = (Part / Whole) x 100

Front

What percentage of 60 is 15?

Back

25%

Front

What is a ratio?

Back

A ratio is a comparison of two quantities.

Front

What is the ratio of red balls to blue balls if there are 12 red and 16 blue?

Back

3:4

Front

How do you solve a proportion?

Back

Cross-multiply and solve for the unknown.

Front

If the ratio of boys to girls is 3 to 4 and there are 21 boys, how many girls are there?

Back

28 girls in the class.