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Which fraction is equal to (2.25) on the number line?

Answer and explanation

Correct answer: (\frac{9}{4})

A decimal can be changed into a fraction by writing it over a power of 10. The number 2.25 has two digits after the decimal point, so 2.25=225/100. Now reduce this fraction by dividing numerator and denominator by their common factor 25: 225÷25=9 and 100÷25=4. Thus 2.25=9/4, making choice A correct.

The result can also be checked by dividing 9 by 4: 4 goes into 9 twice with remainder 1, and the remainder gives 0.25, so the quotient is 2.25. The fraction 4/9 is less than 1, 5/4 equals 1.25, and 11/4 equals 2.75, so none of those represents 2.25. Therefore the point on the number line has value 9/4.

Related tags

DecimalFractionNumber-Line

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