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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 71 · 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. 1.44.95 ÷ 10 =
  2. 2.337.1 × 100 =
  3. 3.39.01 × 100 =
  4. 4.15.94 × 100 =
  5. 5.17.62 ÷ 1000 =
  6. 6.37.29 × 100 =
  7. 7.186.6 × 10 =
  8. 8.481.1 ÷ 1000 =
  9. 9.121.9 ÷ 1000 =
  10. 10.41.69 × 1000 =
  11. 11.122.5 × 10 =
  12. 12.86.1 × 1000 =
  13. 13.203.6 × 1000 =
  14. 14.82.5 ÷ 10 =
  15. 15.17.82 × 100 =
  16. 16.14.52 ÷ 100 =
  17. 17.275.9 × 10 =
  18. 18.22.25 × 10 =
  19. 19.285.9 × 100 =
  20. 20.459.4 × 10 =
  21. 21.0.81 ÷ 100 =
  22. 22.11.03 ÷ 10 =
  23. 23.22.41 × 1000 =
  24. 24.366.1 ÷ 10 =
  25. 25.34.71 × 10 =
  26. 26.29.33 × 1000 =
  27. 27.238.4 × 10 =
  28. 28.1.22 ÷ 10 =
  29. 29.67.1 × 10 =
  30. 30.122.2 × 10 =
  31. 31.306.7 ÷ 10 =
  32. 32.312.3 × 1000 =
  33. 33.11.21 × 10 =
  34. 34.141.7 × 10 =
  35. 35.165.9 ÷ 1000 =
  36. 36.35.53 × 10 =
  37. 37.442.1 × 10 =
  38. 38.206.1 × 1000 =
  39. 39.102.1 ÷ 100 =
  40. 40.391.5 ÷ 10 =

Answer key

  1. 4.495
  2. 33710
  3. 3901
  4. 1594
  5. 0.01762
  6. 3729
  7. 1866
  8. 0.4811
  9. 0.1219
  10. 41690
  11. 1225
  12. 86100
  13. 203600
  14. 8.25
  15. 1782
  16. 0.1452
  17. 2759
  18. 222.5
  19. 28590
  20. 4594
  21. 0.0081
  22. 1.103
  23. 22410
  24. 36.61
  25. 347.1
  26. 29330
  27. 2384
  28. 0.122
  29. 671
  30. 1222
  31. 30.67
  32. 312300
  33. 112.1
  34. 1417
  35. 0.1659
  36. 355.3
  37. 4421
  38. 206100
  39. 1.021
  40. 39.15

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