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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 618 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.11.22 ÷ 1000 =
  2. 2.56.4 ÷ 1000 =
  3. 3.199.2 × 1000 =
  4. 4.1.66 ÷ 1000 =
  5. 5.280.3 × 10 =
  6. 6.19.5 ÷ 1000 =
  7. 7.244.2 × 100 =
  8. 8.444.3 × 1000 =
  9. 9.67.3 ÷ 100 =
  10. 10.215.7 × 100 =
  11. 11.23.1 ÷ 10 =
  12. 12.10.02 × 1000 =
  13. 13.24.7 × 10 =
  14. 14.366.8 × 1000 =
  15. 15.32.11 × 1000 =
  16. 16.53.2 ÷ 10 =
  17. 17.79.3 ÷ 100 =
  18. 18.439.5 × 1000 =
  19. 19.41.76 ÷ 100 =
  20. 20.121.8 × 10 =
  21. 21.12.41 × 10 =
  22. 22.381.9 × 100 =
  23. 23.6.72 ÷ 100 =
  24. 24.2.25 ÷ 10 =
  25. 25.18.09 ÷ 10 =
  26. 26.128.1 ÷ 1000 =
  27. 27.154.6 × 10 =
  28. 28.12.04 ÷ 100 =
  29. 29.30.68 ÷ 1000 =
  30. 30.9.02 × 10 =
  31. 31.436.4 × 100 =
  32. 32.12.23 ÷ 10 =
  33. 33.226.4 × 100 =
  34. 34.46.01 × 100 =
  35. 35.292.1 ÷ 10 =
  36. 36.0.68 × 1000 =
  37. 37.15.25 ÷ 1000 =
  38. 38.197.8 ÷ 10 =
  39. 39.47.63 × 100 =
  40. 40.42.43 ÷ 10 =

Answer key

  1. 0.01122
  2. 0.0564
  3. 199200
  4. 0.00166
  5. 2803
  6. 0.0195
  7. 24420
  8. 444300
  9. 0.673
  10. 21570
  11. 2.31
  12. 10020
  13. 247
  14. 366800
  15. 32110
  16. 5.32
  17. 0.793
  18. 439500
  19. 0.4176
  20. 1218
  21. 124.1
  22. 38190
  23. 0.0672
  24. 0.225
  25. 1.809
  26. 0.1281
  27. 1546
  28. 0.1204
  29. 0.03068
  30. 90.2
  31. 43640
  32. 1.223
  33. 22640
  34. 4601
  35. 29.21
  36. 680
  37. 0.01525
  38. 19.78
  39. 4763
  40. 4.243

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