2025 Pre Algebra Midterm

Front

What is the Commutative Property of Addition?

Back

The Commutative Property of Addition states that changing the order of the addends does not change the sum. For example, 3 + 9 = 9 + 3.

Front

How do you calculate the percent of change?

Back

Percent of change is calculated using the formula: ((New Value - Old Value) / Old Value) x 100. For example, if attendance increased from 2,376 to 2,950, the percent of change is ((2950 - 2376) / 2376) x 100 = 24%.

Front

What is simple interest?

Back

Simple interest is calculated using the formula: Interest = Principal x Rate x Time. For example, if you have $350 at an interest rate of 2.5% for 3 years, the interest is $350 x 0.025 x 3 = $26.25.

Front

What is absolute value?

Back

Absolute value is the distance of a number from zero on the number line, regardless of direction. For example, |-3| = 3.

Front

What is the product of 7 and -4?

Back

The product of 7 and -4 is -28.

Front

What is the Associative Property of Addition?

Back

The Associative Property of Addition states that the way in which numbers are grouped does not change their sum. For example, (2 + 3) + 4 = 2 + (3 + 4).

Front

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

Back

The area of a rectangle is calculated using the formula: Area = Length x Width.

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents a number in mathematical expressions or equations.

Front

What is the Distributive Property?

Back

The Distributive Property states that a(b + c) = ab + ac. It allows you to multiply a single term by two or more terms inside a set of parentheses.

Front

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

Back

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