Unit 3 Test

Front

What is the percentage of 11-year-old students if 40% are 13 years old and 50% are 12 years old in a group of 140 students?

Back

10% of the students are 11 years old.

Front

How do you calculate the time it takes to run one lap if George runs 10 laps in 15 minutes?

Back

Divide total time by number of laps: 15 minutes / 10 laps = 1.5 minutes per lap.

Front

If Lilly runs 1 lap in 1.2 minutes, how do you find the time for 25 laps?

Back

Multiply the time per lap by the number of laps: 1.2 minutes/lap * 25 laps = 30 minutes.

Front

What is the formula to calculate the percentage of employees who walk to work?

Back

(Number of employees who walk / Total number of employees) * 100.

Front

If Suzie has saved 75% of her $80 goal, how much money has she saved?

Back

$60 (0.75 * 80 = 60).

Front

What is the total number of students if 40% are 13 years old, 50% are 12 years old, and the rest are 11 years old?

Back

140 students.

Front

How do you convert a fraction to a percentage?

Back

Multiply the fraction by 100.

Front

What is the relationship between time, distance, and speed?

Back

Speed = Distance / Time.

Front

How do you find the total savings if you know the percentage saved?

Back

Total savings = Total goal * Percentage saved.

Front

What is the average time per lap if a runner completes 10 laps in 15 minutes?

Back

1.5 minutes per lap.