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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 620 · 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. 1.11.01 × 10 =
  2. 2.3.45 ÷ 100 =
  3. 3.370.6 × 1000 =
  4. 4.236.4 × 100 =
  5. 5.396.1 ÷ 100 =
  6. 6.1.23 × 1000 =
  7. 7.4.6 ÷ 100 =
  8. 8.10.26 × 1000 =
  9. 9.1.11 × 10 =
  10. 10.0.11 ÷ 10 =
  11. 11.26.64 × 10 =
  12. 12.10.9 ÷ 1000 =
  13. 13.35.51 × 100 =
  14. 14.331.1 × 1000 =
  15. 15.5.61 × 10 =
  16. 16.46.9 × 10 =
  17. 17.103.2 ÷ 100 =
  18. 18.8.66 × 1000 =
  19. 19.46.21 ÷ 10 =
  20. 20.31.74 × 10 =
  21. 21.313.4 × 100 =
  22. 22.9.74 ÷ 100 =
  23. 23.155.3 ÷ 10 =
  24. 24.18.21 ÷ 1000 =
  25. 25.40.86 ÷ 100 =
  26. 26.475.6 × 10 =
  27. 27.42.33 × 10 =
  28. 28.32.65 ÷ 1000 =
  29. 29.47.68 × 100 =
  30. 30.413.7 ÷ 1000 =
  31. 31.93.4 × 1000 =
  32. 32.238.8 × 1000 =
  33. 33.34.78 ÷ 10 =
  34. 34.17.83 × 10 =
  35. 35.1.47 × 10 =
  36. 36.36.52 ÷ 100 =
  37. 37.203.1 × 10 =
  38. 38.258.1 × 10 =
  39. 39.330.2 × 1000 =
  40. 40.8.1 ÷ 100 =

Answer key

  1. 110.1
  2. 0.0345
  3. 370600
  4. 23640
  5. 3.961
  6. 1230
  7. 0.046
  8. 10260
  9. 11.1
  10. 0.011
  11. 266.4
  12. 0.0109
  13. 3551
  14. 331100
  15. 56.1
  16. 469
  17. 1.032
  18. 8660
  19. 4.621
  20. 317.4
  21. 31340
  22. 0.0974
  23. 15.53
  24. 0.01821
  25. 0.4086
  26. 4756
  27. 423.3
  28. 0.03265
  29. 4768
  30. 0.4137
  31. 93400
  32. 238800
  33. 3.478
  34. 178.3
  35. 14.7
  36. 0.3652
  37. 2031
  38. 2581
  39. 330200
  40. 0.081

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