Last updated on Oct 23, 2026

Evaluating Expressions (Leaving Cert Mathematics): Quizzes

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Evaluating Expressions

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What does evaluating an expression mean?

Finding its value by substituting numbers

What does the algebraic notation $3x$ mean?

$3 × x$

In the expression $2a^2$ , which operation should you do first?

Square $a$

What is the critical rule when evaluating terms like $2x^2$ ?

Always square before you multiply

Find the value of $2x^2 - 3y^2$ when $x = 3$ and $y = 2$ .

$6$

Evaluate $3x^2 - 5x + 6$ when $x = -2$ .

$28$

What is the correct value of $2x^2$ when $x = 3$ ?

$18$

What is the value of $(-2)^2$ ?

$4$

What should you always use when substituting negative numbers?

Brackets

What is the first step when evaluating an expression?

Identify variables & their values

Which order of operations should you follow when evaluating?

BODMAS/PEMDAS

What is the value of $(-3)^2$ ?

$9$

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Fundamentals of Algebra

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Fundamentals of Algebra

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Fundamentals of Algebra

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