7th Grade Math PSSA Review (18 - 19)

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Front

Define a prime number.

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Front

What is the Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides. (a² + b² = c²)

Front

How do you calculate the mean of a set of numbers?

Back

Mean = (sum of all values) / (number of values)

Front

What is the difference between a rational and an irrational number?

Back

A rational number can be expressed as a fraction of two integers, while an irrational number cannot be expressed as a simple fraction.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr, where r is the radius.

Front

Define an integer.

Back

An integer is a whole number that can be positive, negative, or zero.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac.

Front

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

Back

To find the median, arrange the numbers in order and select the middle number. If there is an even number of values, average the two middle numbers.

Front

What is a variable in algebra?

Back

A variable is a symbol used to represent an unknown value in mathematical expressions or equations.