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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 70 · 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. 1.24.55 ÷ 10 =
  2. 2.66.9 × 1000 =
  3. 3.48.76 ÷ 100 =
  4. 4.152.8 ÷ 10 =
  5. 5.49.41 × 1000 =
  6. 6.472.1 × 100 =
  7. 7.53.3 ÷ 10 =
  8. 8.12.18 × 1000 =
  9. 9.362.2 × 10 =
  10. 10.38.83 × 10 =
  11. 11.44.29 × 10 =
  12. 12.31.41 ÷ 100 =
  13. 13.36.99 ÷ 100 =
  14. 14.296.7 × 1000 =
  15. 15.44.23 ÷ 100 =
  16. 16.19.99 × 10 =
  17. 17.30.21 × 100 =
  18. 18.139.1 × 100 =
  19. 19.72.3 × 10 =
  20. 20.25.77 ÷ 1000 =
  21. 21.141.7 × 10 =
  22. 22.181.8 × 100 =
  23. 23.132.7 ÷ 1000 =
  24. 24.397.9 × 100 =
  25. 25.31.97 ÷ 10 =
  26. 26.13.7 × 10 =
  27. 27.61.7 ÷ 10 =
  28. 28.83.1 × 1000 =
  29. 29.296.9 ÷ 100 =
  30. 30.8.51 ÷ 100 =
  31. 31.81.2 ÷ 1000 =
  32. 32.7.35 × 10 =
  33. 33.18.55 × 10 =
  34. 34.24.22 × 100 =
  35. 35.329.9 ÷ 100 =
  36. 36.31.41 ÷ 1000 =
  37. 37.23.87 × 10 =
  38. 38.13.21 ÷ 100 =
  39. 39.141.1 × 10 =
  40. 40.30.93 × 10 =

Answer key

  1. 2.455
  2. 66900
  3. 0.4876
  4. 15.28
  5. 49410
  6. 47210
  7. 5.33
  8. 12180
  9. 3622
  10. 388.3
  11. 442.9
  12. 0.3141
  13. 0.3699
  14. 296700
  15. 0.4423
  16. 199.9
  17. 3021
  18. 13910
  19. 723
  20. 0.02577
  21. 1417
  22. 18180
  23. 0.1327
  24. 39790
  25. 3.197
  26. 137
  27. 6.17
  28. 83100
  29. 2.969
  30. 0.0851
  31. 0.0812
  32. 73.5
  33. 185.5
  34. 2422
  35. 3.299
  36. 0.03141
  37. 238.7
  38. 0.1321
  39. 1411
  40. 309.3

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