Rounding to the nearest 10 worksheet with step-by-step instructions and practice problems.

Explanation:
We are rounding each number to the nearest 10. Here’s how to do it:

- Look at the ones digit (the last digit).
- If the ones digit is 0–4, round down to the lower ten.
- If the ones digit is 5–9, round up to the higher ten.

Let’s go one by one:

1. 16 → ones digit is 6 → round up → 20
2. 21 → ones digit is 1 → round down → 20
3. 48 → ones digit is 8 → round up → 50
4. 12 → ones digit is 2 → round down → 10
5. 43 → ones digit is 3 → round down → 40
6. 33 → ones digit is 3 → round down → 30
7. 45 → ones digit is 5 → round up → 50
8. 19 → ones digit is 9 → round up → 20
9. 53 → ones digit is 3 → round down → 50
10. 66 → ones digit is 6 → round up → 70
11. 85 → ones digit is 5 → round up → 90
12. 91 → ones digit is 1 → round down → 90
13. 77 → ones digit is 7 → round up → 80
14. 88 → ones digit is 8 → round up → 90
15. 96 → ones digit is 6 → round up → 100
16. 59 → ones digit is 9 → round up → 60

Let me double-check a few tricky ones:
- 45 → exactly halfway between 40 and 50 → rule says round up → 50 ✔
- 96 → closer to 100 than to 90 (difference: 4 vs 6) → 100 ✔
- 91 → only 1 away from 90, 9 away from 100 → 90 ✔

All correct.

Final Answer:
1. 20
2. 20
3. 50
4. 10
5. 40
6. 30
7. 50
8. 20
9. 50
10. 70
11. 90
12. 90
13. 80
14. 90
15. 100
16. 60