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Which decimal lies between (2.5) and (2.7)?

Answer and explanation

Correct answer: (2.56)

The direct answer is option B,
\(2.56\). A number lies between two numbers when it is greater than the smaller number and less than the larger number. Write the endpoints with equal decimal places:
\(2.5=2.50\) and
\(2.7=2.70\). Now compare:
\(2.50<2.56<2.70\), so 2.56 is between them. Option A,
\(2.49\), is less than 2.50, so it lies below the interval. Option B is correct. Option C,
\(2.75\), is greater than 2.70, so it lies above the interval. Option D,
\(2.07\), is also less than 2.50. Adding a zero to the right of a decimal does not change its value, so this comparison method is safe. Exam cue: align decimal places before comparing.

Related tags

Number SystemsBetween DecimalsCompare Decimals

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