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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 909 · 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. 1.48.64 ÷ 10 =
  2. 2.321.1 ÷ 10 =
  3. 3.4.76 × 10 =
  4. 4.332.7 ÷ 100 =
  5. 5.48.41 ÷ 100 =
  6. 6.316.1 × 10 =
  7. 7.379.1 × 10 =
  8. 8.43.84 × 10 =
  9. 9.26.56 ÷ 10 =
  10. 10.497.1 × 10 =
  11. 11.23.44 × 100 =
  12. 12.395.5 ÷ 1000 =
  13. 13.479.3 × 10 =
  14. 14.485.1 ÷ 10 =
  15. 15.278.6 ÷ 10 =
  16. 16.21.52 ÷ 10 =
  17. 17.4.64 × 100 =
  18. 18.19.44 ÷ 10 =
  19. 19.192.8 ÷ 100 =
  20. 20.26.38 ÷ 10 =
  21. 21.86.2 ÷ 100 =
  22. 22.27.36 ÷ 10 =
  23. 23.21.6 × 10 =
  24. 24.167.1 × 10 =
  25. 25.25.1 × 10 =
  26. 26.142.3 × 10 =
  27. 27.32.73 × 100 =
  28. 28.22.17 ÷ 10 =
  29. 29.258.4 × 10 =
  30. 30.469.1 ÷ 1000 =
  31. 31.135.4 ÷ 1000 =
  32. 32.184.6 ÷ 10 =
  33. 33.347.1 × 10 =
  34. 34.3.55 × 100 =
  35. 35.10.5 × 100 =
  36. 36.5.85 ÷ 1000 =
  37. 37.19.82 × 10 =
  38. 38.4.31 × 1000 =
  39. 39.480.1 ÷ 1000 =
  40. 40.44.91 × 1000 =

Answer key

  1. 4.864
  2. 32.11
  3. 47.6
  4. 3.327
  5. 0.4841
  6. 3161
  7. 3791
  8. 438.4
  9. 2.656
  10. 4971
  11. 2344
  12. 0.3955
  13. 4793
  14. 48.51
  15. 27.86
  16. 2.152
  17. 464
  18. 1.944
  19. 1.928
  20. 2.638
  21. 0.862
  22. 2.736
  23. 216
  24. 1671
  25. 251
  26. 1423
  27. 3273
  28. 2.217
  29. 2584
  30. 0.4691
  31. 0.1354
  32. 18.46
  33. 3471
  34. 355
  35. 1050
  36. 0.00585
  37. 198.2
  38. 4310
  39. 0.4801
  40. 44910

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