Algebra Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols (like +, -, *, /) but does not have an equality sign.

Front

Which of the following is an expression? 5x + 8, 18x = 92

Back

5x + 8 is an expression; 18x = 92 is an equation.

Front

What does 'the sum of seven and x' mean in algebraic terms?

Back

It means to add 7 and x together, represented as 7 + x.

Front

What is the product of 7 and j?

Back

The product of 7 and j is represented as 7j.

Front

If there are 150 hi-chews in a bag and Bradley grabs x hi-chews, how do you express the number left?

Back

The expression is 150 - x.

Front

If a string is 30 cm long and p cm is cut off, what is the remaining length?

Back

The remaining length is expressed as 30 - p.

Front

What is a variable in algebra?

Back

A variable is a symbol (often a letter) that represents an unknown value.

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a number that is multiplied by a variable in an 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 numbers.

Front

What is the difference between an equation and an expression?

Back

An equation has an equality sign (=) and shows that two expressions are equal, while an expression does not.