Estimate the addition by rounding each number to the nearest ten thousand. Then find the sum.
Estimate:

440,000

Step-by-step explanation: Round each number and then add together.

400,825 rounds to 400,000.

39,557 rounds to 40,000.

400,000+40,000 = 440,000

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right