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Subtracting Unlike Fractions

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Subtracting Unlike Fractions worksheet preview

Subtracting Unlike Fractions

Fraction subtraction illustration

📚 Part 1: Finding Common Denominators

1. What is the least common denominator (LCD) for these fractions?

a) 3/4 and 1/6 LCD = _______

b) 2/5 and 3/8 LCD = _______

c) 5/6 and 1/4 LCD = _______

2. Convert these fractions to equivalent fractions with a common denominator:

a) 3/4 = _____/12 and 1/3 = _____/12

b) 7/8 = _____/24 and 2/3 = _____/24

3. Which fraction is larger? Circle your answer.

5/6

3/4

✏️ Part 2: Subtracting Unlike Fractions

4. Solve these subtraction problems. Show your working in the boxes below.

a) 3/4 - 2/5 = _______

b) 5/6 - 1/4 = _______

c) 7/8 - 3/5 = _______

5. Challenge: Solve this mixed number subtraction problem.

2 1/3 - 1 1/6 = _______

🎮 Part 3: Game Design Application

6. You're designing a maths game where players collect fraction cards. If a player has 7/10 points and loses 2/5 points, how many points do they have left?

Answer: _______ points

7. Explain in your own words why we need a common denominator to subtract fractions.
8. Create your own subtraction problem using unlike fractions and solve it.

My problem: _______ - _______ = _______

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