8th Grade IM Unit 7

Front

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

Back

Area = length × width.

Front

Define a rational number.

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

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 find the mean of a set of numbers?

Back

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

Front

What is the difference between a prime number and a composite number?

Back

A prime number has exactly two distinct positive divisors: 1 and itself. A composite number has more than two positive divisors.

Front

What is the formula for the volume of a cylinder?

Back

Volume = π × radius² × height.

Front

Define an integer.

Back

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

Front

What is the relationship between the angles in a triangle?

Back

The sum of the interior angles in a triangle is always 180 degrees.

Front

How do you convert a fraction to a decimal?

Back

Divide the numerator by the denominator.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 × π × radius.