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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 108 · 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. 1.45.11 × 10 =
  2. 2.492.6 × 10 =
  3. 3.278.2 × 10 =
  4. 4.0.42 ÷ 1000 =
  5. 5.14.26 × 10 =
  6. 6.346.8 ÷ 10 =
  7. 7.29.4 ÷ 100 =
  8. 8.448.2 ÷ 100 =
  9. 9.310.2 × 100 =
  10. 10.31.88 × 100 =
  11. 11.48.48 ÷ 1000 =
  12. 12.13.92 ÷ 10 =
  13. 13.45.61 × 1000 =
  14. 14.276.1 ÷ 100 =
  15. 15.337.6 ÷ 100 =
  16. 16.427.8 × 10 =
  17. 17.47.56 ÷ 100 =
  18. 18.230.3 × 10 =
  19. 19.17.38 × 1000 =
  20. 20.43.51 × 1000 =
  21. 21.41.29 ÷ 1000 =
  22. 22.197.4 ÷ 10 =
  23. 23.4.88 × 1000 =
  24. 24.131.5 ÷ 1000 =
  25. 25.487.9 ÷ 100 =
  26. 26.329.4 × 100 =
  27. 27.347.1 × 10 =
  28. 28.186.7 × 100 =
  29. 29.39.25 ÷ 10 =
  30. 30.185.1 × 1000 =
  31. 31.29.21 × 100 =
  32. 32.8.12 ÷ 10 =
  33. 33.6.42 ÷ 10 =
  34. 34.18.54 × 10 =
  35. 35.54.1 ÷ 1000 =
  36. 36.365.8 ÷ 1000 =
  37. 37.14.74 × 100 =
  38. 38.200.6 ÷ 10 =
  39. 39.82.5 ÷ 1000 =
  40. 40.102.5 ÷ 10 =

Answer key

  1. 451.1
  2. 4926
  3. 2782
  4. 0.00042
  5. 142.6
  6. 34.68
  7. 0.294
  8. 4.482
  9. 31020
  10. 3188
  11. 0.04848
  12. 1.392
  13. 45610
  14. 2.761
  15. 3.376
  16. 4278
  17. 0.4756
  18. 2303
  19. 17380
  20. 43510
  21. 0.04129
  22. 19.74
  23. 4880
  24. 0.1315
  25. 4.879
  26. 32940
  27. 3471
  28. 18670
  29. 3.925
  30. 185100
  31. 2921
  32. 0.812
  33. 0.642
  34. 185.4
  35. 0.0541
  36. 0.3658
  37. 1474
  38. 20.06
  39. 0.0825
  40. 10.25

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