Math Review

Front

What is the formula to find the number of rows needed for a given number of seats and students?

Back

Number of rows = Total students ÷ Seats per row

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. It has exactly two distinct positive divisors: 1 and itself.

Front

How do you determine if a list of numbers is in order from least to greatest?

Back

A list is in order from least to greatest if each number is less than or equal to the next number in the list.

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). It is often remembered by the acronym PEMDAS.

Front

Calculate the total cost if an item costs $5 and you buy 3 items. What is the total?

Back

Total cost = Price per item × Number of items = $5 × 3 = $15.

Front

What is the value of the expression 10 - (2 + 3) × 2?

Back

Value = 10 - (5 × 2) = 10 - 10 = 0.

Front

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

Back

A composite number has more than two positive divisors, while a prime number has exactly two positive divisors.

Front

If a Happy Meal costs $7.30 and you pay $0.75 less, how much do you pay?

Back

You pay $7.30 - $0.75 = $6.55.

Front

What is the result of 5.2 + (22 - 4) × 3 ÷ 8?

Back

Result = 7.4.

Front

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

Back

Average = (Sum of all numbers) ÷ (Total count of numbers).