1. Problem 48: Round 247.831 to the nearest whole number. - Rule: To round to the nearest whole number, look at the first decimal place. - Since 0.8 is greater than or equal to 0.5, round up. $$247.831 \approx 248$$ 2. Problem 49: Round 6.35491 to the nearest cent (two decimal places). - Rule: Look at the third decimal place to decide rounding. - The third decimal is 4, which is less than 5, so round down. $$6.35491 \approx 6.35$$ 3. Problem 50: Round 11.99721 to the nearest cent. - The third decimal is 7, which is greater than or equal to 5, so round up. $$11.99721 \approx 12.00$$ 4. Problem 51: Round 7,356.49 to the nearest dollar. - Look at the first decimal place: 4, less than 5, so round down. $$7,356.49 \approx 7,356$$ 5. Problem 52: Which number rounds up to the nearest ten? - A. 736 rounds to 740 (round up) - B. 1,031 rounds to 1,030 (round down) - C. 462 rounds to 460 (round down) - D. 9,962 rounds to 9,960 (round down) Answer: A 6. Problem 53: Which number rounds up to the nearest thousandth? - A. 0.333333 rounds to 0.333 (round down) - B. 0.848484 rounds to 0.848 (round down) - C. 0.121212 rounds to 0.121 (round down) - D. 0.666666 rounds to 0.667 (round up) Answer: D 7. Problem 54: Which number rounds down to the nearest hundredth? - A. 145.0168 rounds to 145.02 (round up) - B. 180.54011 rounds to 180.54 (round down) - C. 273.936 rounds to 273.94 (round up) - D. 61.3272 rounds to 61.33 (round up) Answer: B