Intro to Expressions

Front

What is an expression in mathematics?

Back

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

Front

What does '3 more than x' mean in algebraic terms?

Back

It means x + 3, which can also be written as 3 + x.

Front

How do you evaluate the expression (4 + 5) ÷ 3 × 6 - 6?

Back

First, calculate (4 + 5) = 9. Then, 9 ÷ 3 = 3. Next, 3 × 6 = 18. Finally, 18 - 6 = 12.

Front

What does 'three times the sum of 2 and e' look like in algebraic form?

Back

It is represented as 3(e + 2).

Front

How do you express 'the quotient of a number and 8'?

Back

It is expressed as g ÷ 8, where g is the number.

Front

What does 'five times Mike's age, increased by 9' mean in algebraic terms?

Back

It is represented as 5x + 9, where x is Mike's age.

Front

What is a variable in an expression?

Back

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

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.

Front

What does 'the sum of a number and 7' look like in algebraic form?

Back

It is represented as x + 7, where x is the number.

Front

How do you express 'twice a number'?

Back

It is expressed as 2x, where x is the number.