Rounding numbers to the nearest 10, 100, and 1000 worksheet for math practice.
Worksheet titled "Rounding to the Nearest 10, 100 & 1000 Sheet 1" with exercises for rounding numbers to the nearest 10, 100, and 1000.
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Step-by-step solution for: Rounding to the nearest 1000 Worksheets
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Show Answer Key & Explanations
Step-by-step solution for: Rounding to the nearest 1000 Worksheets
Let's solve the problem step by step.
The task is to round each number to the nearest 10, 100, or 1000 as indicated. We'll go through each row and round accordingly.
---
We look at the ones digit (the last digit). If it's 5 or more, round up; otherwise, round down.
1. 3147 → ?
- Ones digit: 7 → round up
- 3147 → 3150
2. 5146 → ?
- Ones digit: 6 → round up
- 5146 → 5150
3. 51828 → ?
- Ones digit: 8 → round up
- 51828 → 51830
4. 41.93 → ?
- This is a decimal. We're rounding to nearest 10, so we consider tens place.
- 41.93 is between 40 and 50. The ones digit is 1 (<5), so round down.
- 41.93 → 40
5. 51.95 → ?
- Between 50 and 60. Ones digit is 1 → less than 5 → round down
- 51.95 → 50
6. 51.128 → ?
- 51.128 is between 50 and 60. Ones digit is 1 → less than 5 → round down
- 51.128 → 50
7. 71908 → ?
- Ones digit: 8 → round up
- 71908 → 71910
8. 81.259 → ?
- Between 80 and 90. Ones digit is 1 → round down
- 81.259 → 80
9. 91.167 → ?
- Between 90 and 100. Ones digit is 1 → round down
- 91.167 → 90
10. 101.295 → ?
- Between 100 and 110. Ones digit is 1 → round down
- 101.295 → 100
11. 101.373 → ?
- Ones digit: 1 → round down
- 101.373 → 100
12. 121.106 → ?
- Ones digit: 1 → round down
- 121.106 → 120
✔ So Row 1 answers:
- 3147 → 3150
- 5146 → 5150
- 51828 → 51830
- 41.93 → 40
- 51.95 → 50
- 51.128 → 50
- 71908 → 71910
- 81.259 → 80
- 91.167 → 90
- 101.295 → 100
- 101.373 → 100
- 121.106 → 120
---
Look at the tens digit. If ≥5, round up; else, round down.
1. 31.732 → ?
- Tens digit: 1 (in 31) → less than 5 → round down
- 31.732 → 0 (nearest hundred)
Wait — 31.732 is between 0 and 100. Since 31 < 50, round down → 0
2. 31.959 → ?
- Still under 100, 31 < 50 → 0
3. 31.305 → ?
- 31 < 50 → 0
4. 60.817 → ?
- 60 > 50 → round up to 100 → 100
5. 51.763 → ?
- 51 > 50 → round up → 100
6. 61.284 → ?
- 61 > 50 → 100
7. 71.455 → ?
- 71 > 50 → 100
8. 81.1372 → ?
- 81 > 50 → 100
9. 91.2408 → ?
- 91 > 50 → 100
10. 101.1375 → ?
- 101 → between 100 and 200. Tens digit is 0 (in 101), but hundreds digit is 1 → check if 101 is closer to 100 or 200?
- 101 - 100 = 1
- 200 - 101 = 99 → closer to 100 → 100
11. 101.956 → ?
- 101.956 → still closer to 100 than 200 → 100
12. 101.4947 → ?
- 101.4947 → still closer to 100 → 100
Wait — let’s be careful.
When rounding to nearest 100, we look at the tens digit of the number.
For example:
- 101 → tens digit is 0 → 0 < 5 → round down → 100
- 150 → tens digit is 5 → round up → 200
- 149 → tens digit 4 → round down → 100
So:
- 101.1375 → tens digit is 0 → 100
- 101.956 → tens digit 0 → 100
- 101.4947 → tens digit 0 → 100
But wait — all these are between 100 and 200. Since tens digit is 0, we round down → 100
✔ So Row 2 answers:
- 31.732 → 0
- 31.959 → 0
- 31.305 → 0
- 60.817 → 100
- 51.763 → 100
- 61.284 → 100
- 71.455 → 100
- 81.1372 → 100
- 91.2408 → 100
- 101.1375 → 100
- 101.956 → 100
- 101.4947 → 100
---
Now we look at the hundreds digit.
1. 31.3348 → ?
- Less than 1000 → nearest thousand is 0
2. 31.9557 → ?
- Still < 1000 → 0
3. 31.1808 → ?
- < 1000 → 0
4. 60.827 → ?
- < 1000 → 0
5. 51.9581 → ?
- < 1000 → 0
6. 61.4380 → ?
- < 1000 → 0
7. 71.7215 → ?
- < 1000 → 0
8. 81.1595 → ?
- < 1000 → 0
9. 91.6375 → ?
- < 1000 → 0
10. 101.3811 → ?
- 101.3811 → between 0 and 1000 → still < 1000 → 0
11. 101.375 → ?
- < 1000 → 0
12. 101.7387 → ?
- < 1000 → 0
All numbers in this row are less than 1000, so they all round to 0 when rounding to the nearest 1000.
✔ So Row 3 answers:
- All → 0
---
#### Round to nearest 10:
- 3147 → 3150
- 5146 → 5150
- 51828 → 51830
- 41.93 → 40
- 51.95 → 50
- 51.128 → 50
- 71908 → 71910
- 81.259 → 80
- 91.167 → 90
- 101.295 → 100
- 101.373 → 100
- 121.106 → 120
#### Round to nearest 100:
- 31.732 → 0
- 31.959 → 0
- 31.305 → 0
- 60.817 → 100
- 51.763 → 100
- 61.284 → 100
- 71.455 → 100
- 81.1372 → 100
- 91.2408 → 100
- 101.1375 → 100
- 101.956 → 100
- 101.4947 → 100
#### Round to nearest 1000:
- All values → 0
---
💡 Note: For decimals like 41.93, rounding to nearest 10 means considering how close it is to 40 vs. 50. Since 41.93 is closer to 40 than 50, it rounds to 40.
Similarly, for 101.375 → nearest 100: 101 is closer to 100 than 200 → 100.
And for 101.375 → nearest 1000: it's less than 1000 → 0.
✔ All solved!
The task is to round each number to the nearest 10, 100, or 1000 as indicated. We'll go through each row and round accordingly.
---
🔹 Row 1: Round to the nearest 10
We look at the ones digit (the last digit). If it's 5 or more, round up; otherwise, round down.
1. 3147 → ?
- Ones digit: 7 → round up
- 3147 → 3150
2. 5146 → ?
- Ones digit: 6 → round up
- 5146 → 5150
3. 51828 → ?
- Ones digit: 8 → round up
- 51828 → 51830
4. 41.93 → ?
- This is a decimal. We're rounding to nearest 10, so we consider tens place.
- 41.93 is between 40 and 50. The ones digit is 1 (<5), so round down.
- 41.93 → 40
5. 51.95 → ?
- Between 50 and 60. Ones digit is 1 → less than 5 → round down
- 51.95 → 50
6. 51.128 → ?
- 51.128 is between 50 and 60. Ones digit is 1 → less than 5 → round down
- 51.128 → 50
7. 71908 → ?
- Ones digit: 8 → round up
- 71908 → 71910
8. 81.259 → ?
- Between 80 and 90. Ones digit is 1 → round down
- 81.259 → 80
9. 91.167 → ?
- Between 90 and 100. Ones digit is 1 → round down
- 91.167 → 90
10. 101.295 → ?
- Between 100 and 110. Ones digit is 1 → round down
- 101.295 → 100
11. 101.373 → ?
- Ones digit: 1 → round down
- 101.373 → 100
12. 121.106 → ?
- Ones digit: 1 → round down
- 121.106 → 120
✔ So Row 1 answers:
- 3147 → 3150
- 5146 → 5150
- 51828 → 51830
- 41.93 → 40
- 51.95 → 50
- 51.128 → 50
- 71908 → 71910
- 81.259 → 80
- 91.167 → 90
- 101.295 → 100
- 101.373 → 100
- 121.106 → 120
---
🔹 Row 2: Round to the nearest 100
Look at the tens digit. If ≥5, round up; else, round down.
1. 31.732 → ?
- Tens digit: 1 (in 31) → less than 5 → round down
- 31.732 → 0 (nearest hundred)
Wait — 31.732 is between 0 and 100. Since 31 < 50, round down → 0
2. 31.959 → ?
- Still under 100, 31 < 50 → 0
3. 31.305 → ?
- 31 < 50 → 0
4. 60.817 → ?
- 60 > 50 → round up to 100 → 100
5. 51.763 → ?
- 51 > 50 → round up → 100
6. 61.284 → ?
- 61 > 50 → 100
7. 71.455 → ?
- 71 > 50 → 100
8. 81.1372 → ?
- 81 > 50 → 100
9. 91.2408 → ?
- 91 > 50 → 100
10. 101.1375 → ?
- 101 → between 100 and 200. Tens digit is 0 (in 101), but hundreds digit is 1 → check if 101 is closer to 100 or 200?
- 101 - 100 = 1
- 200 - 101 = 99 → closer to 100 → 100
11. 101.956 → ?
- 101.956 → still closer to 100 than 200 → 100
12. 101.4947 → ?
- 101.4947 → still closer to 100 → 100
Wait — let’s be careful.
When rounding to nearest 100, we look at the tens digit of the number.
For example:
- 101 → tens digit is 0 → 0 < 5 → round down → 100
- 150 → tens digit is 5 → round up → 200
- 149 → tens digit 4 → round down → 100
So:
- 101.1375 → tens digit is 0 → 100
- 101.956 → tens digit 0 → 100
- 101.4947 → tens digit 0 → 100
But wait — all these are between 100 and 200. Since tens digit is 0, we round down → 100
✔ So Row 2 answers:
- 31.732 → 0
- 31.959 → 0
- 31.305 → 0
- 60.817 → 100
- 51.763 → 100
- 61.284 → 100
- 71.455 → 100
- 81.1372 → 100
- 91.2408 → 100
- 101.1375 → 100
- 101.956 → 100
- 101.4947 → 100
---
🔹 Row 3: Round to the nearest 1000
Now we look at the hundreds digit.
1. 31.3348 → ?
- Less than 1000 → nearest thousand is 0
2. 31.9557 → ?
- Still < 1000 → 0
3. 31.1808 → ?
- < 1000 → 0
4. 60.827 → ?
- < 1000 → 0
5. 51.9581 → ?
- < 1000 → 0
6. 61.4380 → ?
- < 1000 → 0
7. 71.7215 → ?
- < 1000 → 0
8. 81.1595 → ?
- < 1000 → 0
9. 91.6375 → ?
- < 1000 → 0
10. 101.3811 → ?
- 101.3811 → between 0 and 1000 → still < 1000 → 0
11. 101.375 → ?
- < 1000 → 0
12. 101.7387 → ?
- < 1000 → 0
All numbers in this row are less than 1000, so they all round to 0 when rounding to the nearest 1000.
✔ So Row 3 answers:
- All → 0
---
✔ Final Answer Summary:
#### Round to nearest 10:
- 3147 → 3150
- 5146 → 5150
- 51828 → 51830
- 41.93 → 40
- 51.95 → 50
- 51.128 → 50
- 71908 → 71910
- 81.259 → 80
- 91.167 → 90
- 101.295 → 100
- 101.373 → 100
- 121.106 → 120
#### Round to nearest 100:
- 31.732 → 0
- 31.959 → 0
- 31.305 → 0
- 60.817 → 100
- 51.763 → 100
- 61.284 → 100
- 71.455 → 100
- 81.1372 → 100
- 91.2408 → 100
- 101.1375 → 100
- 101.956 → 100
- 101.4947 → 100
#### Round to nearest 1000:
- All values → 0
---
💡 Note: For decimals like 41.93, rounding to nearest 10 means considering how close it is to 40 vs. 50. Since 41.93 is closer to 40 than 50, it rounds to 40.
Similarly, for 101.375 → nearest 100: 101 is closer to 100 than 200 → 100.
And for 101.375 → nearest 1000: it's less than 1000 → 0.
✔ All solved!
Parent Tip: Review the logic above to help your child master the concept of rounding to nearest ten thousand worksheet.
