How do you Round 126945 to the nearest hundred thousand?

126945 .

Inspect the hundred number, '9' in this case.

If the hundred number is '5' or greater , then you add '1' to the thousands number. ( 6 + 1 = 7)

Hence

127,000 is the answer.

NB if the hundreds number is 0 - 4 , then the thousands number remains unvhanges.

e.g. 126, 495 The hundred number is '4' in this case.

Hence to the nearest thousand it is 126,000