1. The problem is to round numbers to the nearest 10 or 100 based on the underlined digit. 2. The rule for rounding is: Look at the digit to the right of the place value you are rounding to. - If that digit is 5 or more, round up by adding 1 to the underlined digit and changing all digits to the right to zero. - If that digit is less than 5, keep the underlined digit the same and change all digits to the right to zero. 3. Example given: 4,689 rounded to the nearest 1,000 is 5,000 because the hundreds digit (6) is 5 or more. 4. Let's solve the first problem completely: - Number: 3,074 - Underlined digit is in the tens place (7) - Look at the digit to the right (4) - Since 4 is less than 5, keep 7 the same and change the ones digit to zero. - So, 3,074 rounded to the nearest 10 is 3,070. 5. For the rest, the answers are: 2) 5,710 3) 7,160 4) 7,060 5) 7,760 6) 6,300 7) 8,330 8) 6,450 9) 5,400 10) 9,520 11) 5,210 12) 8,090 13) 9,670 14) 2,820 15) 5,820 16) 1,230 17) 8,610 18) 3,330 19) 1,130 20) 5,460 21) 6,320 22) 7,530 23) 4,130 24) 7,230 Final answer for problem 1: 3,070