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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 96 · 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. 1.19.2 × 1000 =
  2. 2.122.1 ÷ 1000 =
  3. 3.445.4 × 100 =
  4. 4.14.71 × 100 =
  5. 5.486.5 × 100 =
  6. 6.389.5 ÷ 10 =
  7. 7.393.3 ÷ 10 =
  8. 8.30.85 × 10 =
  9. 9.61.4 ÷ 10 =
  10. 10.11.58 × 100 =
  11. 11.57.4 × 10 =
  12. 12.362.4 ÷ 10 =
  13. 13.1.48 × 1000 =
  14. 14.491.1 ÷ 10 =
  15. 15.440.5 ÷ 100 =
  16. 16.33.21 × 10 =
  17. 17.35.79 × 100 =
  18. 18.49.74 × 10 =
  19. 19.46.7 × 1000 =
  20. 20.9.25 ÷ 10 =
  21. 21.133.1 × 1000 =
  22. 22.466.3 × 100 =
  23. 23.406.5 × 10 =
  24. 24.9.45 ÷ 10 =
  25. 25.34.2 × 100 =
  26. 26.464.3 ÷ 10 =
  27. 27.164.8 × 1000 =
  28. 28.262.7 ÷ 1000 =
  29. 29.98.3 ÷ 10 =
  30. 30.39.37 ÷ 100 =
  31. 31.7.7 ÷ 10 =
  32. 32.373.1 ÷ 1000 =
  33. 33.18.41 ÷ 10 =
  34. 34.209.1 ÷ 100 =
  35. 35.20.41 × 10 =
  36. 36.11.6 ÷ 10 =
  37. 37.27.7 × 10 =
  38. 38.389.1 × 100 =
  39. 39.135.7 × 1000 =
  40. 40.17.91 × 10 =

Answer key

  1. 19200
  2. 0.1221
  3. 44540
  4. 1471
  5. 48650
  6. 38.95
  7. 39.33
  8. 308.5
  9. 6.14
  10. 1158
  11. 574
  12. 36.24
  13. 1480
  14. 49.11
  15. 4.405
  16. 332.1
  17. 3579
  18. 497.4
  19. 46700
  20. 0.925
  21. 133100
  22. 46630
  23. 4065
  24. 0.945
  25. 3420
  26. 46.43
  27. 164800
  28. 0.2627
  29. 9.83
  30. 0.3937
  31. 0.77
  32. 0.3731
  33. 1.841
  34. 2.091
  35. 204.1
  36. 1.16
  37. 277
  38. 38910
  39. 135700
  40. 179.1

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