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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 799 · 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. 1.39.96 ÷ 10 =
  2. 2.0.87 × 10 =
  3. 3.187.7 ÷ 1000 =
  4. 4.6.14 × 10 =
  5. 5.2.78 ÷ 10 =
  6. 6.169.9 ÷ 1000 =
  7. 7.129.9 ÷ 10 =
  8. 8.6.86 ÷ 100 =
  9. 9.13.13 ÷ 1000 =
  10. 10.35.5 × 10 =
  11. 11.344.7 × 1000 =
  12. 12.11.5 × 10 =
  13. 13.43.38 ÷ 10 =
  14. 14.39.46 × 1000 =
  15. 15.35.88 ÷ 10 =
  16. 16.3.25 × 10 =
  17. 17.378.1 × 10 =
  18. 18.158.1 ÷ 1000 =
  19. 19.35.65 × 10 =
  20. 20.36.59 ÷ 1000 =
  21. 21.493.3 ÷ 1000 =
  22. 22.317.3 ÷ 10 =
  23. 23.257.2 × 1000 =
  24. 24.1.07 × 1000 =
  25. 25.80.7 × 1000 =
  26. 26.361.2 × 100 =
  27. 27.428.1 × 100 =
  28. 28.37.8 × 1000 =
  29. 29.32.68 ÷ 100 =
  30. 30.11.16 ÷ 1000 =
  31. 31.275.2 ÷ 1000 =
  32. 32.281.3 × 10 =
  33. 33.45.27 ÷ 10 =
  34. 34.36.47 × 1000 =
  35. 35.32.54 ÷ 10 =
  36. 36.252.5 ÷ 10 =
  37. 37.23.03 × 1000 =
  38. 38.178.9 × 1000 =
  39. 39.276.5 ÷ 10 =
  40. 40.27.91 × 100 =

Answer key

  1. 3.996
  2. 8.7
  3. 0.1877
  4. 61.4
  5. 0.278
  6. 0.1699
  7. 12.99
  8. 0.0686
  9. 0.01313
  10. 355
  11. 344700
  12. 115
  13. 4.338
  14. 39460
  15. 3.588
  16. 32.5
  17. 3781
  18. 0.1581
  19. 356.5
  20. 0.03659
  21. 0.4933
  22. 31.73
  23. 257200
  24. 1070
  25. 80700
  26. 36120
  27. 42810
  28. 37800
  29. 0.3268
  30. 0.01116
  31. 0.2752
  32. 2813
  33. 4.527
  34. 36470
  35. 3.254
  36. 25.25
  37. 23030
  38. 178900
  39. 27.65
  40. 2791

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