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Subtracting Unit Fractions

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Subtracting Unit Fractions

Fraction bars illustration

🎯 WALT: We Are Learning To

• Subtract unit fractions that have the same denominator

• Use fraction bars and visual models to represent subtraction

• Write subtraction number sentences using fraction symbols

✅ Success Criteria - I can:

□ Use fraction bars to show subtracting fractions with the same denominator

□ Write a subtraction sentence for a fraction problem

□ Explain my thinking using fraction language

📊 Part 1: Visual Fraction Subtraction

1. Look at this fraction bar showing 6/8. If you take away 2/8, what is left?

[■■■■■■□□] → Take away 2 parts → [■■■■□□□□]

4/8

8/8

2/8

2. Complete this subtraction: 5/6 - 3/6 = _____

2/6

8/6

2/3

3. Which subtraction sentence matches this fraction bar?

[■■■□□□□□] (3 parts shaded out of 8)

8/8 - 5/8 = 3/8

5/8 - 2/8 = 3/8

3/8 + 5/8 = 8/8

4. Sarah had 7/10 of a chocolate bar. She ate 4/10 of it. How much is left?

✏️ Part 2: Write the Subtraction Sentences

5. Complete these subtraction problems:

a) 4/5 - 1/5 = _____

b) 7/8 - 3/8 = _____

c) 6/10 - 2/10 = _____

6. Draw fraction bars to show this subtraction: 5/6 - 2/6 = 3/6
7. Create your own subtraction word problem using fractions with the same denominator:
8. Explain in your own words: When we subtract fractions with the same denominator, what stays the same and what changes?

🌟 Extension Challenge

9. Advanced: If you have 9/12 of a pizza and eat 5/12, then your friend eats 2/12, how much pizza is left?
10. Create a number line showing the subtraction 6/8 - 4/8 = 2/8:

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