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MathematicsFractionsAges 10–13

Fraction Word Problems

Solve word problems involving addition and subtraction of fractions with unlike denominators, using visual models and benchmark fractions to estimate and assess reasonableness

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1858 concepts · 9 subjects

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Choose addition or subtraction for unlike-denominator fraction stories, and use benchmarks to challenge unreasonable answers.

Choose addition or subtraction for unlike-denominator fraction stories, and use benchmarks to challenge unreasonable answers.

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Illustrative Mathematics · Practice link — not the full lesson

Half of a Recipe

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Before you open · source notes

A recipe story supports fraction word problems. Not every percent discount.

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 find half of a recipe amount and say what the answer means.

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. “Half of a Recipe.” Licensed CC BY-NC-SA 4.0. External task; Gakuva does not copy, host, embed, or redistribute it.

CC BY-NC-SA 4.0 — link only

Check understanding

  • Solve: 'Tara ate 2/5 of a pizza and Sam ate 1/3. How much did they eat together?'
  • Recognise that 2/5 + 1/2 ≠ 3/7 because 3/7 < 1/2 but the sum should exceed 1/2
  • Estimate a fraction sum using benchmarks (0, 1/2, 1) before computing exactly
“If your child walks 1 and 1/2 miles to school and 3/4 of a mile to a friend's house, can they work out the total distance — and check whether their answer makes sense?”

Curriculum record

Type
Procedural
Subject
Mathematics
Domain
Fractions
Age range
Ages 10–13

Standards

acara-v9:AC9M6N05acara-v9:AC9M6N08ccss-math:5.NF.2the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G6-B2.1the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G6-B2.5the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G7-B2.1the-ontario-curriculum-mathematics-2020:ON-MATH-2020-G7-B2.5