MathematicsFreePrintable
Adding Unlike Denominators
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Adding Unlike Denominators
🎯 Part 1: Finding Common Denominators
1. Find equivalent fractions with common denominators, then add:
a) 1/3 + 1/6 = _____ + _____ = _____
b) 2/5 + 1/4 = _____ + _____ = _____
2. Circle the correct common denominator for each pair:
a) 1/4 and 3/8
4
8
12
b) 2/3 and 1/6
3
6
9
3. Add these fractions. Show all your work:
a) 3/4 + 1/8 = _____
b) 1/2 + 2/7 = _____
📖 Part 2: Word Problems
4. Maria ate 1/4 of a pizza for lunch and 1/6 of the same pizza for dinner. How much pizza did she eat in total?
Answer: ___________
5. Jake walked 3/8 of a mile to school and 1/4 of a mile to the library. How far did he walk altogether?
Answer: ___________
6. Challenge Problem: Sarah used 2 1/3 cups of flour for cookies and 1 1/4 cups of flour for bread. How much flour did she use in total?
Answer: ___________
✏️ Part 3: Explain Your Thinking
7. Explain in your own words why we need to find a common denominator before adding fractions:
8. Look at this problem: 1/3 + 1/4. Describe the steps you would take to solve it:
9. Create Your Own: Write a word problem that requires adding two fractions with unlike denominators. Then solve it.
Your Problem:
Your Solution:
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