Let’s go through each problem step by step. We’ll round numbers to the nearest 10 or 100, just like the worksheet asks.
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Rounding to the nearest 10:
We look at the
ones digit (the last digit).
- If it’s 5 or more → round up.
- If it’s less than 5 → round down.
1. 45 → ones digit is 5 → round up →
50
2. 67 → ones digit is 7 → round up →
70
3. 82 → ones digit is 2 → round down →
80
4. 39 → ones digit is 9 → round up →
40
5. 74 → ones digit is 4 → round down →
70
6. 12 → ones digit is 2 → round down →
10
7. 93 → ones digit is 3 → round down →
90
8. 44 → ones digit is 4 → round down →
40
9. 25 → ones digit is 5 → round up →
30
10. 65 → ones digit is 5 → round up →
70
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Rounding to the nearest 100:
We look at the
tens digit (second from right).
- If it’s 5 or more → round up.
- If it’s less than 5 → round down.
11. 350 → tens digit is 5 → round up →
400
12. 220 → tens digit is 2 → round down →
200
13. 863 → tens digit is 6 → round up →
900
14. 949 → tens digit is 4 → round down →
900
15. 667 → tens digit is 6 → round up →
700
16. 150 → tens digit is 5 → round up →
200
17. 744 → tens digit is 4 → round down →
700
18. 368 → tens digit is 6 → round up →
400
19. 136 → tens digit is 3 → round down →
100
20. 650 → tens digit is 5 → round up →
700
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Final Answer:
1. 50
2. 70
3. 80
4. 40
5. 70
6. 10
7. 90
8. 40
9. 30
10. 70
11. 400
12. 200
13. 900
14. 900
15. 700
16. 200
17. 700
18. 400
19. 100
20. 700
Parent Tip: Review the logic above to help your child master the concept of printable math worksheets on rounding.