Estimate the answer

Explanation

To find 50% of a number, we divide the number by 2. To estimate 50% of 2,595,603, we will find 50% of 2,600,000.  We use 2,600,000 as an approximation because it is close to 2,595,603, because it is even, and, therefore, divisible by 2, and because it ends with many zeros.

50% of 2,595,603 ≈ 1,300,000 (Because 50% of 2,600,000 = \(\frac{2,600,000}{2} = 1,300,000\) )