Let's solve the rounding decimal problems step by step.
---
Understanding the Task
We are asked to
round each decimal to the nearest whole number. This means:
- Look at the
tenths place (the first digit after the decimal point).
- If it is
5 or greater, round
up.
- If it is
less than 5, round
down.
For example:
- 3.4 → tenths digit is 4 (< 5) → rounds down to
3
- 5.7 → tenths digit is 7 (≥ 5) → rounds up to
6
---
Part 1: Round to the nearest whole number
#### First set:
| Number | Rounded |
|--------|--------|
| 6.2 | 6 |
| 2.9 | 3 |
| 5.3 | 5 |
| 5.4 | 5 |
| 1.1 | 1 |
| 4.7 | 5 |
> Explanation:
- 6.2 → 6 (tenths = 2 < 5)
- 2.9 → 3 (tenths = 9 ≥ 5)
- 5.3 → 5 (tenths = 3 < 5)
- 5.4 → 5 (tenths = 4 < 5)
- 1.1 → 1 (tenths = 1 < 5)
- 4.7 → 5 (tenths = 7 ≥ 5)
---
#### Second set:
| Number | Rounded |
|--------|--------|
| 14.8 | 15 |
| 29.9 | 30 |
| 18.2 | 18 |
| 40.1 | 40 |
| 29.8 | 30 |
> Explanation:
- 14.8 → 15 (tenths = 8 ≥ 5)
- 29.9 → 30 (tenths = 9 ≥ 5)
- 18.2 → 18 (tenths = 2 < 5)
- 40.1 → 40 (tenths = 1 < 5)
- 29.8 → 30 (tenths = 8 ≥ 5)
---
#### Third set:
| Number | Rounded |
|--------|--------|
| 157.6 | 158 |
| 491.4 | 491 |
| 119.5 | 120 |
| 802.4 | 802 |
| 214.4 | 214 |
> Explanation:
- 157.6 → 158 (tenths = 6 ≥ 5)
- 491.4 → 491 (tenths = 4 < 5)
- 119.5 → 120 (tenths = 5 → round up)
- 802.4 → 802 (tenths = 4 < 5)
- 214.4 → 214 (tenths = 4 < 5)
---
✔ Final Answers:
#### First Table:
```
6.2 → 6
2.9 → 3
5.3 → 5
5.4 → 5
1.1 → 1
4.7 → 5
```
#### Second Table:
```
14.8 → 15
29.9 → 30
18.2 → 18
40.1 → 40
29.8 → 30
```
#### Third Table:
```
157.6 → 158
491.4 → 491
119.5 → 120
802.4 → 802
214.4 → 214
```
---
🔍 Special Note:
The instruction says:
> "If the whole number has a 5, round it to the whole number above."
This refers to
when the tenths digit is exactly 5, we
round up — which is standard rounding rule.
For example:
- 119.5 → 120 (because 5 in tenths → round up)
---
✔ All answers follow this rule correctly.
Let me know if you'd like this formatted as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of 5th grade rounding decimals worksheet.