Let's solve the rounding problem step by step. We'll round each number to the specified place (nearest 10, 100, or 1,000), and then determine whether it was
rounded up or
rounded down.
---
🔹 Round off to the nearest 10
We look at the
ones digit (the last digit).
- If it’s
5 or more, we
round up.
- If it’s
less than 5, we
round down.
#### 1.
154
- Ones digit:
4 → less than 5 →
round down
- Nearest 10:
150
-
✔ Round Down
#### 2.
3,739
- Ones digit:
9 → ≥ 5 →
round up
- Nearest 10:
3,740
-
✔ Round Up
#### 3.
4,502
- Ones digit:
2 → < 5 →
round down
- Nearest 10:
4,500
-
✔ Round Down
#### 4.
67,117
- Ones digit:
7 → ≥ 5 →
round up
- Nearest 10:
67,120
-
✔ Round Up
---
🔹 Round off to the nearest 100
Look at the
tens digit.
- If tens digit is
5 or more, round up.
- If less than 5, round down.
#### 1.
138
- Tens digit:
3 → < 5 →
round down
- Nearest 100:
100
-
✔ Round Down
#### 2.
279
- Tens digit:
7 → ≥ 5 →
round up
- Nearest 100:
300
-
✔ Round Up
#### 3.
8,723
- Tens digit:
2 → < 5 →
round down
- Nearest 100:
8,700
-
✔ Round Down
#### 4.
9,093
- Tens digit:
9 → ≥ 5 →
round up
- Nearest 100:
9,100
-
✔ Round Up
---
🔹 Round off to the nearest 1,000
Look at the
hundreds digit.
- If hundreds digit is
5 or more, round up.
- If less than 5, round down.
#### 1.
7,725
- Hundreds digit:
7 → ≥ 5 →
round up
- Nearest 1,000:
8,000
-
✔ Round Up
#### 2.
2,943
- Hundreds digit:
9 → ≥ 5 →
round up
- Nearest 1,000:
3,000
-
✔ Round Up
#### 3.
68,481
- Hundreds digit:
4 → < 5 →
round down
- Nearest 1,000:
68,000
-
✔ Round Down
#### 4.
84,473
- Hundreds digit:
4 → < 5 →
round down
- Nearest 1,000:
84,000
-
✔ Round Down
---
✔ Final Answer:
####
Round off to the nearest 10
| Number | Rounded To | Round Up | Round Down |
|--------|------------|----------|------------|
| 154 | 150 |
✘ |
✔ |
| 3,739 | 3,740 |
✔ |
✘ |
| 4,502 | 4,500 |
✘ |
✔ |
| 67,117 | 67,120 |
✔ |
✘ |
####
Round off to the nearest 100
| Number | Rounded To | Round Up | Round Down |
|--------|------------|----------|------------|
| 138 | 100 |
✘ |
✔ |
| 279 | 300 |
✔ |
✘ |
| 8,723 | 8,700 |
✘ |
✔ |
| 9,093 | 9,100 |
✔ |
✘ |
####
Round off to the nearest 1,000
| Number | Rounded To | Round Up | Round Down |
|---------|------------|----------|------------|
| 7,725 | 8,000 |
✔ |
✘ |
| 2,943 | 3,000 |
✔ |
✘ |
| 68,481 | 68,000 |
✘ |
✔ |
| 84,473 | 84,000 |
✘ |
✔ |
---
📝 Summary:
-
Rounding Rule: Look at the digit
to the right of the place you're rounding to.
- If it’s
5 or more,
round up.
- If it’s
less than 5,
round down.
- Always check the
correct digit based on the rounding place.
Let me know if you'd like this in a printable format!
Parent Tip: Review the logic above to help your child master the concept of rounding worksheet 4th grade.