Compare labels at equal servings

Supplied materials

• Paper or a text document; all cases below are original fictional learning inputs.
• An adult may read aloud; drawing or spoken answers are valid. No personal health information or physical performance is required.
• The separate worked case gives AgramsPerServing=7, BgramsPerServing=4, commonServings=3. Calculate the equal-basis difference as(A per serving−B per serving)×common servings. First identify the quantities and keep their units consistent. The calculation is (7-4)*3=9 grams difference. That result answers this supplied planning question only. It does not establish what a real person did, diagnose a condition or prove physical skill. Compare the units with the question before accepting a number.
• Fictional case 1: AgramsPerServing=6, BgramsPerServing=4, commonServings=2. What is the modeled result using the stated method?
• Fictional case 2: AgramsPerServing=8, BgramsPerServing=5, commonServings=3. What is the modeled result using the stated method?
• Fictional case 3: AgramsPerServing=7, BgramsPerServing=3, commonServings=2. What is the modeled result using the stated method?
• Fictional case 4: AgramsPerServing=5, BgramsPerServing=2, commonServings=4. What is the modeled result using the stated method?
• Fictional case 5: AgramsPerServing=9, BgramsPerServing=6, commonServings=2. What is the modeled result using the stated method?
• Fictional case 6: AgramsPerServing=10, BgramsPerServing=4, commonServings=3. What is the modeled result using the stated method?

Learn the idea

Label comparisons need the same basis. A food with a smaller number per serving may use a smaller serving size. In this model, both labels use the same serving size and report grams of the same nutrient.

To compare two-servings amounts, scale each label by the supplied common count, then subtract B from A. A negative difference would mean A has less; these cases use A greater than B. This comparison is one nutrient difference, not a complete health ranking.

Use the invented labels, not personal food records. No tasting or buying is needed. A single nutrient cannot determine the best food for every person; access, preferences, allergies and broader patterns also matter.

1. Read or listen to the pretend story. Point to the details the question gives you.
2. Use the same serving count for both labels. Find A minus B for that count; this compares one nutrient amount, not overall health.
3. Check your answer against the example. Say what matches and what you would change.
4. Try the practice questions, then the extra task. Drawing or spoken answers are welcome.

Check your reasoning

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Take it further

Changed case: AgramsPerServing=8, BgramsPerServing=6, commonServings=4. Show the operation. Expected: (8-6)*4=8 grams difference. Explain what the unit means and remember that this is a pretend calculation.

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