MathCounts Countdown

Front

What is the formula for the area of a rectangle?

Back

Area = length × width

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

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.

Tags

CCSS.4.OA.B.4

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)

Tags

CCSS.8.G.B.8

Front

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

Back

Mean = (sum of all numbers) / (total count of numbers)

Tags

CCSS.6.SP.B.5C

Front

What is the difference between perimeter and area?

Back

Perimeter is the total distance around a shape, while area is the amount of space inside a shape.

Front

What is a fraction?

Back

A fraction represents a part of a whole and is expressed as a numerator over a denominator.

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

Front

Define an integer.

Back

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

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). (PEMDAS)

Tags

CCSS.7.NS.A.3

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the difference between a variable and a constant in algebra?

Back

A variable is a symbol that represents an unknown value, while a constant is a fixed value.

Tags

CCSS.6.EE.A.2B