Understanding Least Common Denominators
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Beginner
Start here! Easy to understand
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Beginner Explanation
The least common denominator is the smallest number that both denominators divide into. For example, $\frac{1}{6}$ and $\frac{1}{8}$ have an LCD of 24.
Practice Problems
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1
Quick Quiz
Single Choice Quiz
Beginner
What is the least common denominator of $\frac{1}{4}$ and $\frac{1}{6}$?
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2
Real-World Problem
Question Exercise
Intermediate
Teenager Scenario
You have $\frac{3}{4}$ of a chocolate bar and your friend has $\frac{2}{3}$ of another. How much do you have together?
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3
Thinking Challenge
Thinking Exercise
Intermediate
Think About This
If the least common denominator of $\frac{1}{5}$ and $\frac{1}{15}$ is $15$, what is the sum?
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4
Challenge Quiz
Single Choice Quiz
Advanced
What is the least common denominator of $\frac{5}{12}$ and $\frac{7}{18}$?
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