Holiday Baking: Scaling a Recipe Up and Down

About This Resource

A complete Grade 5 math pack on scaling recipes for holiday cooking: finding the scale factor, doubling and halving quantities, scaling by 1.5 and other factors, working out the amount for one person first, converting grams to kilograms and milliliters to liters, and solving multi-step baking problems. Includes slides with worked examples, a lesson plan, worksheet, quiz, homework, flashcards, a rubric and answer keys.

Overview

Students use real holiday recipes to practice multiplication, division and measurement. They learn to compare the number of people a recipe serves with the number they need to feed to find the scale factor, then multiply or divide every ingredient by it. When the numbers are tricky, they work out the amount for one person first (the unitary method). They convert between grams and kilograms and between milliliters and liters, and solve multi-step problems such as how many packs of butter to buy.

Resource Details

Subject: Math
Topic: Holiday Baking: Scaling a Recipe
Category: Problem Solving
File Type: PDF
File Size: 321.2 KB
Published: 11 Nov 2026
Downloads: 0

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Grade 5 math (ages 10–11) 50 minutes Multiplication division ratio reasoning metric conversion problem solving

Learning Objectives

Find the scale factor between two recipe sizes.
Scale ingredient quantities up and down, including by the unitary method.
Convert metric units and solve multi-step recipe problems.

How to Use This Resource

Start with the slides: show a hot chocolate recipe for 4 and ask how to make enough for 8 people, then for 2.
Teach scale factors and the unitary method with the worked examples, then do worksheet activities 1 and 2 together.
Students complete activities 3 to 6, then use the quiz and send the homework page home.

Classroom Activity Ideas

Party planner: groups choose a class party size and rewrite a recipe for that number of people.
Recipe swap: students bring a family recipe (with an adult's help) and scale it for the class.
Estimate first: before calculating, students say whether the new amount will be bigger or smaller and roughly how much.

Differentiation

Support: use only doubling and halving with whole numbers. Challenge: scale by awkward factors (from 6 people to 10) and convert answers to kilograms or liters.

Assessment

Use the worksheet and quiz to check scale factors, scaling and conversions. Use the rubric to assess the homework family recipe task.

Teacher Tips

Encourage students to ask: Is the new number of people bigger or smaller? That tells them whether to multiply or divide. The unitary method (find the amount for one person first) always works, even with awkward numbers.

What's Included

11-page printable PDF lesson pack: teacher lesson plan with timings, materials and differentiation
Key vocabulary list (8 words with meanings and examples)
Student worksheet (6 activities)
Quiz / assessment (3 parts)
Homework practice page
Printable flashcards: 8 A5 picture cards (separate PDF)
Assessment rubric (4 levels)
Lesson slides (editable PowerPoint)
Editable Word version of all student pages
Complete answer key (also as a separate PDF)

Additional Files

Lesson Slides (PPTX)
Editable Student Pages and Lesson Plan (DOCX)
A5 Flashcards (PDF)
Answer Key (PDF)

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