Let’s go through each problem one by one. We’re rounding to the
nearest tenth, which means we look at the
hundredths place (the second digit after the decimal) to decide whether to round up or stay the same.
Rule:
- If the hundredths digit is
5 or more, round the tenths digit
up.
- If it’s
4 or less, leave the tenths digit
as is.
---
1. 8.54 → hundredths = 4 → keep tenths →
8.5
2. 1.91 → hundredths = 1 → keep tenths →
1.9
3. 7.95 → hundredths = 5 → round up → 7.9 + 0.1 =
8.0
4. 6.40 → hundredths = 0 → keep tenths →
6.4
5. 8.26 → hundredths = 6 → round up →
8.3
6. 8.13 → hundredths = 3 → keep tenths →
8.1
7. 4.66 → hundredths = 6 → round up →
4.7
8. 8.88 → hundredths = 8 → round up → 8.8 + 0.1 =
8.9
9. 6.57 → hundredths = 7 → round up →
6.6
10. 5.30 → hundredths = 0 → keep tenths →
5.3
Now the second column:
11. 3.56 → hundredths = 6 → round up →
3.6
12. 3.99 → hundredths = 9 → round up → 3.9 + 0.1 =
4.0
13. 3.31 → hundredths = 1 → keep tenths →
3.3
14. 7.46 → hundredths = 6 → round up →
7.5
15. 2.59 → hundredths = 9 → round up →
2.6
16. 7.59 → hundredths = 9 → round up →
7.6
17. 4.56 → hundredths = 6 → round up →
4.6
18. 5.94 → hundredths = 4 → keep tenths →
5.9
19. 4.07 → hundredths = 7 → round up →
4.1
20. 3.83 → hundredths = 3 → keep tenths →
3.8
Double-checking a few tricky ones:
- 7.95 → rounds to 8.0 (not 7.9!) because 5 in hundredths makes us round up.
- 3.99 → becomes 4.0 — yes, because 9 in hundredths pushes 9 in tenths to become 10, so carry over.
- 8.88 → 8.9 — correct, since 8 > 5.
All checks out!
Final Answer:
1. 8.5
2. 1.9
3. 8.0
4. 6.4
5. 8.3
6. 8.1
7. 4.7
8. 8.9
9. 6.6
10. 5.3
11. 3.6
12. 4.0
13. 3.3
14. 7.5
15. 2.6
16. 7.6
17. 4.6
18. 5.9
19. 4.1
20. 3.8
Parent Tip: Review the logic above to help your child master the concept of rounding hundredths.