7th Grade Math FInal

Front

What is percent increase?

Back

Percent increase is a measure of how much a quantity has increased relative to its original amount, expressed as a percentage. It is calculated using the formula: ((New Value - Old Value) / Old Value) * 100.

Front

How do you calculate the cost per person when sharing expenses?

Back

To calculate the cost per person, divide the total cost by the number of people sharing the cost. For example, if the total cost is $83.40 and there are 12 friends, each person pays $83.40 / 12 = $6.95.

Front

What is a tip and how do you calculate it?

Back

A tip is a small amount of money given to someone for their service. To calculate a tip, multiply the total bill by the tip percentage. For example, for a $63 bill with a 20% tip, the tip is $63 * 0.20 = $12.60.

Front

How do you find the final temperature after a decrease?

Back

To find the final temperature after a decrease, subtract the decrease from the initial temperature. For example, if the initial temperature is 14°F and it decreases by 25°F, the final temperature is 14°F - 25°F = -11°F.

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is often expressed as a quantity per one unit of another quantity. For example, if a car travels 440 miles in 8 hours, the unit rate is 440 miles / 8 hours = 55 miles per hour.

Front

What is the formula for calculating percent change?

Back

The formula for calculating percent change is: ((New Value - Old Value) / Old Value) * 100.

Front

How do you divide a total cost among a group?

Back

To divide a total cost among a group, simply divide the total amount by the number of people in the group.

Front

What does it mean to round to the nearest percent?

Back

Rounding to the nearest percent means adjusting a decimal percentage to the closest whole number. For example, 50.4% rounded to the nearest percent is 50%.

Front

How do you calculate a 20% tip on a bill?

Back

To calculate a 20% tip, multiply the total bill amount by 0.20. For example, for a $50 bill, the tip would be $50 * 0.20 = $10.

Front

What is the significance of negative temperatures?

Back

Negative temperatures indicate that the temperature is below zero degrees on the Fahrenheit or Celsius scale. For example, -11°F means it is 11 degrees below freezing.