At the Mall with Algebra Chapter 1 Review

Front

What is an expression in algebra?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

How do you represent 'four times a number, minus 7' algebraically?

Back

4P - 7, where P represents the unknown number.

Front

What defines 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 are factors in mathematics?

Back

Factors are numbers that can be multiplied together to get another number.

Front

How do you solve the equation 2B + 5 = 11 for B?

Back

Subtract 5 from both sides to get 2B = 6, then divide by 2 to find B = 3.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign and represents a value, while an equation states that two expressions are equal.

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown value in mathematical expressions and equations.

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that dictates the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Front

What is the purpose of simplifying an expression?

Back

Simplifying an expression makes it easier to work with by reducing it to its simplest form.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with specific numbers.