50² is 2500, and every square from 41² to 59² follows one neat pattern. Find how far the number is from 50 — the gap. Add the gap to 25 (or take it away below 50) for the first part, then write the gap squared as two digits.
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 25 test
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass — and beat the clock: finish within 3 min.
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Part 4 · Speed decimals, fractions and percentages. You can still take the test without signing in.
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