To convert 2.5 into a fraction, we can start by recognizing that the decimal 2.5 can be expressed as 2 + 0.5. The whole number part is 2, and 0.5 can be expressed as the fraction 1/2. Therefore, we can write:
2.5 = 2 + 0.5 = 2 + 1/2
Next, we can convert the whole number 2 into a fraction that has the same denominator as 1/2. The number 2 can be written as 4/2 (since 4 divided by 2 equals 2). Now, we can add the two fractions together:
4/2 + 1/2 = (4 + 1) / 2 = 5/2
So, 2.5 as a fraction is 5/2.