How to Learn Fraction, Decimal and Percentage Equivalents
Knowing that ¾ = 0.75 = 75% instantly — without working it out — makes mental math, shopping, and exams dramatically faster. There is a small set of these that come up constantly. This deck drills the ones worth knowing cold.
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 the common fraction, decimal and percentage equivalents is hard to memorize (and the fix)
People can calculate these but not recall them, which is slow. The thirds (0.333…), eighths and twelfths are the ones most worth memorizing outright.
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 the common fraction, decimal and percentage equivalents
- Break it into small batches. Learn the halves, quarters and tenths first (easy), then the fifths and eighths, then the thirds and sixths (the repeating decimals).
- 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. Learn all three forms of each so you can jump between fraction, decimal and percent in either direction.
The full deck: Fraction, Decimal and Percentage Equivalents
Here's every card in the set. Practise them above, or save the deck and let spaced repetition schedule your reviews automatically.
| Fraction | Decimal / percent |
|---|---|
| What are ½ as a decimal and percentage? | 0.5 = 50% |
| What are ¼ as a decimal and percentage? | 0.25 = 25% |
| What are ¾ as a decimal and percentage? | 0.75 = 75% |
| What are ⅓ as a decimal and percentage? | 0.333… ≈ 33.3% |
| What are ⅔ as a decimal and percentage? | 0.666… ≈ 66.7% |
| What are ⅕ as a decimal and percentage? | 0.2 = 20% |
| What are ⅛ as a decimal and percentage? | 0.125 = 12.5% |
| What are ⅜ as a decimal and percentage? | 0.375 = 37.5% |
| What are ⅒ as a decimal and percentage? | 0.1 = 10% |
| What are ⅐ (1/7) as a decimal (approx)? | ≈ 0.143 = 14.3% |
| What are 1/100 as a decimal and percentage? | 0.01 = 1% |
| What is 1/1000 as a decimal? | 0.001 |
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 the common fraction, decimal and percentage equivalents
How long does it take to learn the common fraction, decimal and percentage equivalents?
Most people can lock in the common fraction, decimal and percentage equivalents 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 the common fraction, decimal and percentage equivalents?
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.