7th Grade Math Review

Front

What is the constant of proportionality?

Back

The constant of proportionality is the constant value of the ratio of two proportional quantities. In this case, it is $9.

Front

What is the result of -5 - (-3)?

Back

The result is -2.

Front

What percentage was the used book marked down if the new book costs $25.00 and the used book costs $15.00?

Back

The used book was marked down by 40%.

Front

How can you determine if a table of values is proportional?

Back

A table is proportional if the ratio of the values in one column to the corresponding values in another column is constant.

Front

How do you calculate a tip of 23% on a $27.31 bill?

Back

To calculate a 23% tip on a $27.31 bill, multiply $27.31 by 0.23, which equals $6.28.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where their ratio is constant.

Front

How do you find the percentage decrease from one price to another?

Back

To find the percentage decrease, subtract the new price from the old price, divide by the old price, and multiply by 100.

Front

What is the formula for calculating the area of a rectangle?

Back

The area of a rectangle is calculated using the formula: Area = length × width.

Front

What is the formula for calculating the volume of a rectangular prism?

Back

The volume of a rectangular prism is calculated using the formula: Volume = length × width × height.

Front

What does it mean for two quantities to be directly proportional?

Back

Two quantities are directly proportional if one quantity increases, the other quantity increases at a constant rate.