Question

question 3
estimate the sum of when rounding to the nearest whole number 1 1/5 + 3 7/8 =
about 4
about 4 1/2
about 5
about 5 1/2

Explanation:

Step1: Round each mixed number

First, round \(1\frac{1}{5}\) to the nearest whole number. The fraction \(\frac{1}{5} = 0.2\), which is less than \(0.5\), so \(1\frac{1}{5}\) rounds to \(1\).

Next, round \(3\frac{7}{8}\) to the nearest whole number. The fraction \(\frac{7}{8}=0.875\), which is greater than \(0.5\), so \(3\frac{7}{8}\) rounds to \(4\).

Step2: Add the rounded numbers

Now, add the rounded whole numbers: \(1 + 4 = 5\). Wait, but let's check again. Wait, maybe I made a mistake. Wait, \(1\frac{1}{5}\) is \(1.2\), \(3\frac{7}{8}\) is \(3.875\). Adding them: \(1.2 + 3.875 = 5.075\), which is about \(5\). Wait, but the original options: let's re - evaluate the rounding. Wait, maybe the problem is to round each fraction part to the nearest whole number (maybe the question is to round each mixed number to the nearest whole number and then add). Wait, \(1\frac{1}{5}\): \(\frac{1}{5}=0.2\), so rounds to \(1\). \(3\frac{7}{8}\): \(\frac{7}{8}=0.875\), rounds to \(4\). Then \(1 + 4 = 5\). So the sum is about \(5\).

Answer:

About 5 (the option "About 5")