Writing Algebraic Expressions

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 '80 more than B' mean in algebraic terms?

Back

It means to add 80 to B, which is represented as B + 80.

Front

How do you express 'a number decreased by 12' in algebra?

Back

It is expressed as n - 12, where n represents the number.

Front

What is the algebraic expression for 'a number added to 19'?

Back

It is represented as 19 + n.

Front

How do you write 'subtract 7 from a number' in algebraic form?

Back

It is written as n - 7.

Front

What does the term 'variable' mean in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown value in an expression or equation.

Front

What is the difference between an expression and an equation?

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An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.

Front

What does 'n + 5' represent?

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It represents a number n increased by 5.

Front

How would you express 'twice a number' in algebra?

Back

It is expressed as 2n.

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What does '3 less than a number' mean in algebraic terms?

Back

It means to subtract 3 from the number, represented as n - 3.