Algebraic Expressions and Operations

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 5 is an algebraic expression.

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.

Front

What is a variable in algebra?

Back

A variable is a symbol, usually a letter, that represents an unknown number or value. For example, in the expression x + 2, x is the variable.

Front

What is the sum of two numbers?

Back

The sum of two numbers is the result of adding them together. For example, the sum of 3 and 5 is 8.

Front

What is the difference between two numbers?

Back

The difference between two numbers is the result of subtracting one number from another. For example, the difference between 10 and 4 is 6.

Front

What is the product of two numbers?

Back

The product of two numbers is the result of multiplying them together. For example, the product of 4 and 5 is 20.

Front

What is the quotient of two numbers?

Back

The quotient of two numbers is the result of dividing one number by another. For example, the quotient of 20 and 4 is 5.

Front

How do you represent 'decreased by' in algebra?

Back

'Decreased by' is represented by subtraction. For example, 'u decreased by 17' is written as u - 17.

Front

What does 'triple' mean in algebra?

Back

'Triple' means to multiply by 3. For example, 'triple the sum of x and 5' is written as 3(x + 5).

Front

What is the meaning of 'cubed' in algebra?

Back

'Cubed' means to raise a number to the power of 3. For example, n cubed is written as n^3.