Approximation and estimation — Quantitative aptitude for kids
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.
Work it out in your head or on paper, then tap your answer — or type it and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
🏁 Lesson 6 test
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.
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