Final answer:
To find the sum of fractions, add the numerators and keep the denominator the same. The exact sum is 4. To estimate the sum, round the fractions to the nearest whole number and then add them. The estimated sum is 1.
Step-by-step explanation:
To find the sum of the fractions, 3(4)/(13) and 5(8)/(13), you need to find a common denominator. In this case, the denominators are already the same (13). So you can simply add the numerators and keep the denominator the same:
3(4)/(13) + 5(8)/(13) = 12/(13) + 40/(13) = (12 + 40)/(13) = 52/(13) = 4
The exact sum of the fractions is 4.
To estimate the sum, you can round the fractions to the nearest whole number and then add them:
3(4)/(13) rounded to the nearest whole number is 0 and 5(8)/(13) rounded to the nearest whole number is 1. So the estimated sum is 0 + 1 = 1.