Dividing by 10, 100 and 1,000 - Answer Key - Mental Math Practice

Sep 30, 2026

Uploaded by Grenda

Dividing by 10, 100 and 1,000 provides an answer key for a mental-math exercise. Each item asks the learner to divide a given whole number by 10, 100, or 1,000 without writing the full computation. The document lists 20 division problems, along with the corresponding correct answers. It supports quick number sense practice focused on place-value shifts and accuracy checking for common core style drills.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Instructions

Use mental math

Division Problems

1) 4,890 ÷ 10

2) 181,000 ÷ 100

3) 29,400 ÷ 100

4) 3,270 ÷ 10

5) 670 ÷ 10

6) 1,630 ÷ 10

7) 60 ÷ 10

8) 8,470 ÷ 10

9) 400 ÷ 100

10) 22,000 ÷ 1,000

11) 500 ÷ 100

12) 84,300 ÷ 10

13) 266,000 ÷ 1,000

14) 40 ÷ 10

15) 335,000 ÷ 100

16) 95,000 ÷ 100

17) 7,800 ÷ 10

18) 23,500 ÷ 100

19) 83,700 ÷ 100

20) 90 ÷ 10

Answer Key

Dividing by 10, 100 and 1,000 Name: Use mental math to divide each number. Do not write out the computation. Answers 1) 4,890 ÷ 10 = 2) 181,000 ÷ 100 = 1. 2. 3) 29,400 ÷ 100 = 4) 3,270 ÷ 10 = 3. 4. 5) 670 ÷ 10 = 6) 1,630 ÷ 10 = 5. 6. 7) 60 ÷ 10 = 8) 8,470 ÷ 10 = 7. 8. 9) 400 ÷ 100 = 10) 22,000 ÷ 1,000 = 9. 10. 11) 500 ÷ 100 = 12) 84,300 ÷ 10 = 11. 12. 13) 266,000 ÷ 1,000 = 14) 40 ÷ 10 = 13. 14. 15) 335,000 ÷ 100 = 16) 95,000 ÷ 100 = 15. 16. 17) 7,800 ÷ 10 = 18) 23,500 ÷ 100 = 17. 18. 19) 83,700 ÷ 100 = 20) 90 ÷ 10 = 19. 20. Math [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 1 1-10 11-20 95 45 90 40 85 35 80 30 75 25 70 20 65 15 60 10 55 5 50 0 Dividing by 10, 100 and 1,000 Name: Answer Key Use mental math to divide each number. Do not write out the computation. 1) 4,890 ÷ 10 = 489 2) 181,000 ÷ 100 = 1,810 3) 29,400 ÷ 100 = 294 4) 3,270 ÷ 10 = 327 5) 670 ÷ 10 = 67 6) 1,630 ÷ 10 = 163 7) 60 ÷ 10 = 6 8) 8,470 ÷ 10 = 847 9) 400 ÷ 100 = 4 10) 22,000 ÷ 1,000 = 22 11) 500 ÷ 100 = 5 12) 84,300 ÷ 10 = 8,430 13) 266,000 ÷ 1,000 = 266 14) 40 ÷ 10 = 4 15) 335,000 ÷ 100 = 3,350 16) 95,000 ÷ 100 = 950 17) 7,800 ÷ 10 = 780 18) 23,500 ÷ 100 = 235 19) 83,700 ÷ 100 = 837 20) 90 ÷ 10 = 9 Answers 1. 489 2. 1,810 3. 294 4. 327 5. 67 6. 163 7. 6 8. 847 9. 4 10. 22 11. 5 12. 8,430 13. 266 14. 4 15. 3,350 16. 950 17. 780 18. 235 19. 837 20. 9 Math [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 1 1-10 11-20 95 45 90 40 85 35 80 30 75 25 70 20 65 15 60 10 55 5 50 0 Dividing by 10, 100 and 1,000 Name: Use mental math to divide each number. Do not write out the computation. Answers 1) 4,890 ÷ 10 = 2) 181,000 ÷ 100 = 1. 2. 3) 29,400 ÷ 100 = 4) 3,270 ÷ 10 = 3. 4. 5) 670 ÷ 10 = 6) 1,630 ÷ 10 = 5. 6. 7) 60 ÷ 10 = 8) 8,470 ÷ 10 = 7. 8. 9) 400 ÷ 100 = 10) 22,000 ÷ 1,000 = 9. 10. 11) 500 ÷ 100 = 12) 84,300 ÷ 10 = 11. 12. 13) 266,000 ÷ 1,000 = 14) 40 ÷ 10 = 13. 14. 15) 335,000 ÷ 100 = 16) 95,000 ÷ 100 = 15. 16. 17) 7,800 ÷ 10 = 18) 23,500 ÷ 100 = 17. 18. 19) 83,700 ÷ 100 = 20) 90 ÷ 10 = 19. 20. Math Modified [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 1 1-10 11-20 95 45 90 40 85 35 80 30 75 25 70 20 65 15 60 10 55 5 50 0 | | | | | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | | | | | | |

FAQs

What skill does this worksheet focus on?

It focuses on using mental math to divide by 10, 100, and 1,000. The problems emphasize place-value understanding rather than written computation.

What are students instructed to do for each problem?

Students are instructed to use mental math to divide each number and not write out the computation.

Where can the correct answers be found?

The document includes an answer key that lists the correct result for each of the 20 division problems.

Sep 30, 2026

Uploaded by Grenda