Grade 3 rounding worksheet for rounding numbers to the nearest 10 or 100.

To round numbers to the nearest 10 or 100, we look at specific digits:

Rounding to the Nearest 10:
- Look at the ones digit (the last number).
- If it is 5 or more, round up.
- If it is 4 or less, round down (keep the tens digit the same).
- Change the ones digit to 0.

Rounding to the Nearest 100:
- Look at the tens digit (the second to last number).
- If it is 5 or more, round up.
- If it is 4 or less, round down (keep the hundreds digit the same).
- Change the tens and ones digits to 0.

Let's solve each problem step-by-step:

1. 1,311: The underlined digit is 1 (ones place). Since 1 is less than 5, we round down. The tens digit stays 1, and the ones become 0. -> 1,310
2. 4,862: The underlined digit is 2 (ones place). Since 2 is less than 5, we round down. -> 4,860
3. 412: The underlined digit is 1 (tens place). We are rounding to the nearest 100. Since 1 is less than 5, we round down. The hundreds digit stays 4, and the rest become 0. -> 400
4. 1,042: The underlined digit is 0 (hundreds place). We are rounding to the nearest 100. Look at the tens digit (4). Since 4 is less than 5, we round down. -> 1,000
5. 9,785: The underlined digit is 5 (ones place). Since 5 is 5 or more, we round up. The tens digit (8) becomes 9. -> 9,790
6. 1,032: The underlined digit is 0 (hundreds place). Rounding to nearest 100. Look at tens digit (3). 3 is less than 5, so round down. -> 1,000
7. 576: The underlined digit is 7 (tens place). Rounding to nearest 100. Since 7 is 5 or more, we round up. The hundreds digit (5) becomes 6. -> 600
8. 6,350: The underlined digit is 5 (tens place). Rounding to nearest 100. Since 5 is 5 or more, we round up. The hundreds digit (3) becomes 4. -> 6,400
9. 6,895: The underlined digit is 9 (tens place). Rounding to nearest 100. Since 9 is 5 or more, we round up. The hundreds digit (8) becomes 9. -> 6,900
10. 3,328: The underlined digit is 2 (tens place). Rounding to nearest 100. Since 2 is less than 5, we round down. -> 3,300
11. 706: The underlined digit is 0 (tens place). Rounding to nearest 100. Since 0 is less than 5, we round down. -> 700
12. 9,521: The underlined digit is 2 (tens place). Rounding to nearest 100. Since 2 is less than 5, we round down. -> 9,500
13. 5,469: The underlined digit is 6 (tens place). Rounding to nearest 100. Since 6 is 5 or more, we round up. The hundreds digit (4) becomes 5. -> 5,500
14. 9,182: The underlined digit is 8 (tens place). Rounding to nearest 100. Since 8 is 5 or more, we round up. The hundreds digit (1) becomes 2. -> 9,200
15. 9,579: The underlined digit is 7 (tens place). Rounding to nearest 100. Since 7 is 5 or more, we round up. The hundreds digit (5) becomes 6. -> 9,600
16. 5,914: The underlined digit is 1 (tens place). Rounding to nearest 100. Since 1 is less than 5, we round down. -> 5,900
17. 6,287: The underlined digit is 8 (tens place). Rounding to nearest 100. Since 8 is 5 or more, we round up. The hundreds digit (2) becomes 3. -> 6,300
18. 1,873: The underlined digit is 7 (tens place). Rounding to nearest 100. Since 7 is 5 or more, we round up. The hundreds digit (8) becomes 9. -> 1,900
19. 923: The underlined digit is 2 (tens place). Rounding to nearest 100. Since 2 is less than 5, we round down. -> 900
20. 6,923: The underlined digit is 2 (tens place). Rounding to nearest 100. Since 2 is less than 5, we round down. -> 6,900
21. 185: The underlined digit is 8 (tens place). Rounding to nearest 100. Since 8 is 5 or more, we round up. The hundreds digit (1) becomes 2. -> 200

Final Answer:
1. 1,310
2. 4,860
3. 400
4. 1,000
5. 9,790
6. 1,000
7. 600
8. 6,400
9. 6,900
10. 3,300
11. 700
12. 9,500
13. 5,500
14. 9,200
15. 9,600
16. 5,900
17. 6,300
18. 1,900
19. 900
20. 6,900
21. 200