Question

Bobby and Cheryl each rounded 885,893 to the nearest ten thousand. Bobby wrote 890,000 and Cheryl wrote 880,000. Who is correct? Complete the explanation of the error that was made.

Answer 1

Bobby is correct in rounding 885,893 to 890,000. The number should be rounded up to the nearest ten thousand because the thousand's digit is greater than 5. Cheryl made a mistake by rounding down to 880,000.

Step-by-step explanation:

The question asks to round the number 885,893 to the nearest ten thousand. When rounding to the nearest ten thousand, we look at the thousand's digit which is 5 in this case. If this digit is 5 or more, we round up; if it is less than 5, we round down. Therefore, we should round 885,893 up to 890,000 because the thousand's digit is 8, which is greater than 5. Bobby rounded up to 890,000, so Bobby is correct. Cheryl rounded down to 880,000, which is an error because she did not round up as the rules of rounding dictate when the digit in question is 5 or greater.