Simplifying Fractions Practice
Practise reducing fractions to lowest terms — dividing top and bottom by their common factor. Type your answer as a fraction.
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How to simplify a fraction
A fraction is in lowest terms when the top and bottom share no common factor other than 1. Simplifying means dividing both by their greatest common factor until that’s true — the value never changes, it just looks tidier.
- Find a number that divides both the numerator and denominator.
- Divide both by it.
- Repeat until the only common factor left is 1.
Type your simplified answer with the fraction-bar key.
Worked examples
Tips & common mistakes
Using the greatest common factor gets there in one step; using a smaller factor just means simplifying more than once, which is fine too. This is where the divisibility rules pay off — they help you spot shared factors fast.
- Stopping too early — 4/8 reduced by 2 is 2/4, which still simplifies to 1/2.
- Dividing only the top or only the bottom.
- Subtracting instead of dividing.
Frequently asked questions
What does simplifying a fraction mean?
Rewriting it in lowest terms by dividing the top and bottom by their common factor, without changing its value. 6/8 simplifies to 3/4.
What is lowest terms?
A fraction is in lowest terms when the numerator and denominator share no common factor other than 1.
What is the GCF?
The greatest common factor — the biggest number that divides both top and bottom. Dividing by it simplifies the fraction in a single step.
How do I type my answer?
Type the numerator, tap the fraction-bar key, then the denominator, e.g. 3 / 4.
How do divisibility rules help?
They let you quickly see whether 2, 3, 5 and others divide both numbers, so you can spot the common factor fast.