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A ratio 4 : 5 means for every 4 of one thing there are 5 of the other. To divide an amount in a ratio, add the parts and find one part. In a proportion a : b = c : d, the outer terms multiply to the same as the inner terms.
✓ You passed this lesson’s test.
One part — “add the ratio parts, find the value of one part, then multiply”
Use it for: Sharing money, recipes, maps and scale drawings, mixtures and partnership.
🧮 Check your own sums with the free Ratio calculator — it shows the working.
Check: Meera gets 4 × 80 = ₹320, and 320 + 400 = 720 ✓
▶ Watch it animatedWork 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 ⚖️ Ratio Ranger badge when you pass — and a certificate when you finish all 10 lessons of Part 1 · Number skills. 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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