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A few fraction families turn up again and again. Learn one member of each family and the rest follow: eighths go up in 0.125, fifths in 0.2, ninths repeat one digit, elevenths repeat 9 × the top, and sevenths go round the circle 142857.
✓ You passed this lesson’s test.
Know the families — “quarters, fifths, eighths, ninths, elevenths and sevenths each follow a pattern”
Use it for: Percentages, money, marks out of 8 or 9, and comparing fractions quickly.
Check: 0.625 × 8 = 5 ✓
Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🔓 Fraction Decoder badge when you pass — and a certificate when you finish all 9 lessons of Part 4 · Bigger numbers, fractions and the calendar. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
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