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On the number line, ( \sqrt{98} ) is closest to which integer?

Answer and explanation

Correct answer: (10)

The direct answer is option C: 10. To locate \(\sqrt{98}\), compare 98 with nearby perfect squares: \(9^2=81\) and \(10^2=100\). Hence \(\sqrt{98}\) lies between 9 and 10. Because 98 is very close to 100, its square root is very close to 10. Numerically, \(\sqrt{98}\approx9.899\). Its distance from 10 is about 0.101, while its distance from 9 is about 0.899, so 10 is the nearest integer. Option C is correct. Option A, 8, is too far away; \(8^2=64\). Option B, 9, is the lower bounding integer but is not nearest. Option D, 11, is above 10 and clearly farther; \(11^2=121\). A common error is to choose the lower integer merely because the root is below 10. Memory cue: bracket the root with consecutive squares, then compare the distances or note which square it is closer to.

Related tags

Number-LineNearest-IntegerSquare-Root

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