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MathematicsMultiplication & DivisionAges 10–13

Brackets in Expressions

Use parentheses, brackets, or braces in numerical expressions and evaluate expressions containing these grouping symbols

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1858 concepts · 9 subjects

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Evaluate grouped calculations from the inside out. Place brackets to give a specified result.

Evaluate grouped calculations from the inside out. Place brackets to give a specified result.

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Illustrative Mathematics · Practice link — not the full lesson

Using Operations and Parentheses

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Before you open · source notes

Parentheses tasks support brackets in expressions. Not every algebra identity proof.

Free, no sign-in. A teacher solution is on the same page, so use the student view with your child.

Before you open

Ask the learner to evaluate an expression with parentheses and say what the brackets change.

Opening this link does not save learning or assess mastery.

Source, access and review notes

Public Illustrative Mathematics task page. The .html address responds HTTP 308 to this URL. An anonymous GET of this URL on 2026-11-12 returned HTTP 200 with no login or payment prompt. Where a teacher solution is present, it is on the same page as the student task; this check did not find a separate locked student view. An adult can use the student view section and should not read a solution aloud. Advertising was not observed in the fetched HTML text; that is not a browser, device, or ad-free guarantee. This is a paper or discussion task, not an automatically marked interactive game. Opening the link does not save practice or assess mastery. Diagrams on the page use missing or filename-only alt text, so they are not an accessible image equivalent. Accessibility still depends on an adult describing the picture.

Illustrative Mathematics. “Using Operations and Parentheses.” Licensed CC BY-NC-SA 4.0. External task; Gakuva does not copy, host, embed, or redistribute it.

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Check understanding

  • Evaluate 3 × (4 + 5) by computing inside the parentheses first
  • Evaluate {2 × [3 + (7 − 1)]} with nested grouping symbols
  • Insert parentheses into an expression to make it equal a target value
“Can your child look at '3 × (4 + 5)' and work out the brackets first — getting '3 × 9 = 27' — rather than just multiplying left to right?”

Curriculum record

Type
Procedural
Subject
Mathematics
Domain
Multiplication & Division
Age range
Ages 10–13

Standards

acara-v9:AC9M6A02ccss-math:5.OA.1the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G5-C2.2the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G6-C2.2the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G7-B2.1the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G7-C2.2