How to Learn Fractions
Fractions trip up more learners than almost any other topic — but each operation follows a simple, reliable rule. Add and subtract need a common denominator; multiply straight across; divide by flipping. This deck drills the rules so fractions stop being scary.
There are 12 cards in the deck below. You can read through them, practise them right here with the flip-card player, and then save the deck to study properly with spaced repetition — the method that makes them stick for months, not minutes.
Why fractions is hard to memorize (and the fix)
The rules are different for each operation, and people apply the wrong one (you do NOT need a common denominator to multiply). Learning which rule goes with which operation is the whole battle.
The fix is active recall plus spaced repetition. Instead of re-reading the list (which feels productive but barely works), you test yourself — pull each answer out of memory — and you review each card on a schedule that stretches over time. Every time you successfully recall a fact, the memory gets stronger and the next review is pushed further out. That's how you go from "I saw it once" to "I just know it."
The fastest way to learn fractions
- Break it into small batches. Learn multiplying first (easiest — straight across), then dividing (flip and multiply), then adding/subtracting (common denominator).
- Test, don't re-read. Look at the question, say the answer out loud before flipping the card. The little struggle to recall is what builds the memory — a smooth re-read does almost nothing.
- Review on a schedule. Spaced repetition shows you each card right before you'd forget it. Get one right and it comes back in a few days, then a week, then a month. Miss one and it comes back sooner.
- Keep sessions short and daily. Five to ten minutes a day beats a two-hour cram every time. Consistency is the whole game.
One fact per card. Always simplify your answer at the end by dividing top and bottom by a common factor.
The full deck: Fractions
Here's every card in the set. Practise them above, or save the deck and let spaced repetition schedule your reviews automatically.
| Question | Answer |
|---|---|
| What is the top number of a fraction called? | The numerator |
| What is the bottom number of a fraction called? | The denominator |
| How do you multiply two fractions? | Multiply the numerators, then the denominators (straight across) |
| How do you divide fractions? | Flip the second fraction and multiply (Keep, Flip, Change) |
| How do you add or subtract fractions? | Give them a common denominator first, then add/subtract the numerators |
| What is ½ × ⅓? | ⅙ (1×1 over 2×3) |
| What is ½ ÷ ¼? | 2 (½ × 4/1 = 4/2 = 2) |
| What is ¼ + ¼? | ½ (2/4 simplified) |
| How do you simplify a fraction? | Divide the top and bottom by their greatest common factor |
| What is an improper fraction? | One where the numerator is bigger than the denominator (e.g. 7/4) |
| What is a mixed number? | A whole number plus a fraction (e.g. 1¾) |
| Do you need a common denominator to MULTIPLY fractions? | No — only to add or subtract |
Save this deck and actually remember it
Create a free account, keep this 12-card deck, and we'll schedule every review at the perfect moment. First deck free forever — no credit card.
Study this deck free →FAQ: learning fractions
How long does it take to learn fractions?
Most people can lock in fractions within one to three weeks of short daily sessions. With spaced repetition doing 10–12 cards a day, you'll recognise them within days and recall them reliably within a couple of weeks.
What's the best way to memorize fractions?
Active recall plus spaced repetition. Test yourself instead of re-reading, and review on a schedule that spaces the cards out over time. Flashcards are built for exactly this — which is why the deck above is the fastest path.
Is this deck free?
Yes. You can practise all 12 cards on this page for free with no account. Sign up (also free) to save the deck and let spaced repetition schedule your reviews so it sticks long-term.