HOPE: Unit 3A Flashcard

Front

What is 20% of $25.50?

Back

$5.10

Front

What percent of girls prefer Instagram if 59% of Instagram users are girls?

Back

59%

Front

If 20% of students in a classroom are 12 years old and there are 15 students, how many are 12 years old?

Back

3 students

Front

If 20% of the council members voted in favor of a new tax and there are 20 members, how many voted in favor?

Back

4 council members

Front

What does it mean if a relationship is Non-Proportional?

Back

A Non-Proportional relationship does not maintain a constant ratio between two quantities.

Front

How do you calculate a percentage of a number?

Back

Multiply the number by the percentage (as a decimal). For example, 20% of 50 is 50 * 0.20 = 10.

Front

What is the formula to find the percentage of a total?

Back

(Part/Total) * 100 = Percentage.

Front

If a meal costs $25.50 and a 20% tip is added, what is the total cost?

Back

Total cost = $25.50 + $5.10 = $30.60.

Front

What is the difference between Proportional and Non-Proportional relationships?

Back

Proportional relationships have a constant ratio, while Non-Proportional relationships do not.

Front

If 15 students are in a class and 20% are 12 years old, what is the equation to find the number of 12-year-olds?

Back

Number of 12-year-olds = 0.20 * 15.