TalentJR apps
In an aptitude test you often only need the option that is closest. Round each number to a friendly one (398 → 400, 51 → 50), work out the easy sum, and pick the nearest answer. Rounding rules: look at the next digit — 5 or more rounds up.
✓ You passed this lesson’s test.
Round, then calculate — “change awkward numbers to near round ones, then the sum is easy”
Use it for: Checking calculator answers, shopping bills, multiple-choice aptitude questions and data interpretation.
Check: 398 × 51 = 20298, which is very close to 20000 ✓
▶ 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 🎯 Close-Call Estimator 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.
Prefer a real teacher? TalentJR teachers take live online classes anywhere in India and visit homes in selected cities. Tell us what you need and our team will call you with timings and fees.