7th Grade Math Review

Front

What is the median in a data set?

Back

The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

How do you solve a proportion?

Back

To solve a proportion, you can cross-multiply and then divide to find the unknown value.

Front

If Tim buys 12 donuts for $9.96, how do you find the cost per donut?

Back

Divide the total cost by the number of donuts: $9.96 ÷ 12 = $0.83 per donut.

Front

What is the next step in solving an equation after simplifying?

Back

The next step may involve isolating the variable, which could include adding or subtracting numbers from both sides.

Front

How do you calculate the surface area of a rectangular prism?

Back

Surface area = 2(lw + lh + wh), where l is length, w is width, and h is height.

Front

What is a box plot?

Back

A box plot is a graphical representation of a data set that shows the median, quartiles, and outliers.

Front

What does it mean to cross-multiply in proportions?

Back

Cross-multiplying means multiplying the numerator of one fraction by the denominator of the other fraction and setting the two products equal to each other.

Front

How do you find the average of a set of numbers?

Back

Add all the numbers together and then divide by the total count of numbers.

Front

What is the formula for finding the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value in an equation or expression.