Math Review - 7th Grade

Front

What is the equation that represents the relationship between the actual height (a) in feet and the height of the model (m) in inches if the model is 7 inches tall and represents an actual height of 15 feet?

Back

m = 7/15 a

Front

If a store buys used designer jeans for $15 and increases the price by 400%, what is the sale price of the jeans?

Back

$75

Front

A recipe yields 2.5 dozen muffins with 1.25 cups of flour. How many cups of flour are needed to make 10 dozen muffins?

Back

5 cups

Front

Write a scenario that leads to the equation 2r + 15 = 25.

Back

You are going to the movies with some friends. You have $25 to spend. The movie costs $15 and each item at the concession stand costs $2. This equation shows how many items you can buy at the concession stand.

Front

What inequality represents how far Ronan can travel if he has $15 to spend on cab fare, with a $3 initial fare and $2.15 per mile?

Back

3 + 2.15x < 15

Front

What is the formula for calculating percentage increase?

Back

Percentage Increase = (New Value - Original Value) / Original Value * 100

Front

Define a proportion in mathematics.

Back

A proportion is an equation that states that two ratios are equal.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

What is the definition of a variable in algebra?

Back

A variable is a symbol used to represent an unknown value.