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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 691 · 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. 1.9.43 ÷ 1000 =
  2. 2.9.07 × 10 =
  3. 3.38.71 × 10 =
  4. 4.121.1 × 10 =
  5. 5.470.5 × 10 =
  6. 6.30.13 ÷ 10 =
  7. 7.41.51 × 100 =
  8. 8.0.38 × 10 =
  9. 9.19.17 ÷ 1000 =
  10. 10.33.16 ÷ 10 =
  11. 11.473.8 ÷ 10 =
  12. 12.244.7 × 100 =
  13. 13.479.4 ÷ 1000 =
  14. 14.20.2 ÷ 10 =
  15. 15.276.3 × 10 =
  16. 16.18.63 × 10 =
  17. 17.278.1 ÷ 10 =
  18. 18.489.3 ÷ 1000 =
  19. 19.43.62 × 1000 =
  20. 20.14.15 ÷ 10 =
  21. 21.36.61 × 100 =
  22. 22.2.17 × 100 =
  23. 23.12.06 ÷ 10 =
  24. 24.13.71 × 10 =
  25. 25.429.3 × 1000 =
  26. 26.348.3 × 1000 =
  27. 27.30.38 ÷ 10 =
  28. 28.50.6 ÷ 10 =
  29. 29.33.7 × 100 =
  30. 30.105.7 ÷ 100 =
  31. 31.432.5 × 10 =
  32. 32.56.7 ÷ 10 =
  33. 33.42.8 × 100 =
  34. 34.355.2 ÷ 10 =
  35. 35.31.05 × 1000 =
  36. 36.21.7 ÷ 1000 =
  37. 37.17.11 × 1000 =
  38. 38.14.72 ÷ 1000 =
  39. 39.42.9 ÷ 100 =
  40. 40.13.17 × 1000 =

Answer key

  1. 0.00943
  2. 90.7
  3. 387.1
  4. 1211
  5. 4705
  6. 3.013
  7. 4151
  8. 3.8
  9. 0.01917
  10. 3.316
  11. 47.38
  12. 24470
  13. 0.4794
  14. 2.02
  15. 2763
  16. 186.3
  17. 27.81
  18. 0.4893
  19. 43620
  20. 1.415
  21. 3661
  22. 217
  23. 1.206
  24. 137.1
  25. 429300
  26. 348300
  27. 3.038
  28. 5.06
  29. 3370
  30. 1.057
  31. 4325
  32. 5.67
  33. 4280
  34. 35.52
  35. 31050
  36. 0.0217
  37. 17110
  38. 0.01472
  39. 0.429
  40. 13170

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