7th Grade Math Review

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal. For example, if a/b = c/d, then a, b, c, and d are in proportion.

Front

How do you find the cost of one item when given the total cost and quantity?

Back

To find the cost of one item, divide the total cost by the number of items. For example, if 12 donuts cost $9.96, then the cost per donut is $9.96 ÷ 12 = $0.83.

Front

What is surface area?

Back

Surface area is the total area that the surface of a three-dimensional object occupies. It is measured in square units.

Front

How do you calculate the probability of an event?

Back

The probability of an event is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. For example, if a spinner has 4 sections and 1 of them is labeled '3', then P(3) = 1/4.

Front

What is the next step in solving an equation?

Back

The next step in solving an equation often involves isolating the variable. This can include operations like adding, subtracting, multiplying, or dividing both sides of the equation.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division. It can be expressed in three ways: as a fraction, with a colon (e.g., 3:4), or with the word 'to' (e.g., 3 to 4).

Front

What is the formula for the area of a rectangle?

Back

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

Front

What is the difference between mean, median, and mode?

Back

Mean is the average of a set of numbers, median is the middle value when the numbers are arranged in order, and mode is the number that appears most frequently.

Front

How do you convert a fraction to a decimal?

Back

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero. Examples include -3, 0, and 5.