Rounding off and best estimate — Mental Maths Mastery
Often you do not need the exact answer — you need to know roughly how big it is. Round each number, do the easy sum, and pick the closest choice. This also catches mistakes in written answers.
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 15 test
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
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