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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 622 · 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. 1.116.3 ÷ 10 =
  2. 2.291.2 ÷ 100 =
  3. 3.25.2 ÷ 10 =
  4. 4.19.77 ÷ 10 =
  5. 5.12.91 ÷ 10 =
  6. 6.76.8 ÷ 1000 =
  7. 7.6.59 ÷ 100 =
  8. 8.37.21 ÷ 1000 =
  9. 9.41.4 × 10 =
  10. 10.310.9 × 1000 =
  11. 11.10.2 × 1000 =
  12. 12.218.8 ÷ 1000 =
  13. 13.272.4 ÷ 10 =
  14. 14.10.67 ÷ 10 =
  15. 15.286.5 ÷ 1000 =
  16. 16.238.1 ÷ 1000 =
  17. 17.39.96 × 1000 =
  18. 18.340.2 × 10 =
  19. 19.267.8 × 10 =
  20. 20.45.53 ÷ 10 =
  21. 21.49.15 × 10 =
  22. 22.319.7 × 10 =
  23. 23.37.81 ÷ 100 =
  24. 24.14.77 × 10 =
  25. 25.116.2 × 100 =
  26. 26.34.14 ÷ 10 =
  27. 27.194.4 × 100 =
  28. 28.47.04 × 10 =
  29. 29.35.34 × 100 =
  30. 30.38.09 ÷ 1000 =
  31. 31.7.11 × 1000 =
  32. 32.297.6 ÷ 10 =
  33. 33.30.66 × 100 =
  34. 34.10.2 ÷ 1000 =
  35. 35.6.41 × 10 =
  36. 36.164.9 × 1000 =
  37. 37.222.8 ÷ 10 =
  38. 38.9.22 ÷ 100 =
  39. 39.1.3 ÷ 10 =
  40. 40.39.15 × 10 =

Answer key

  1. 11.63
  2. 2.912
  3. 2.52
  4. 1.977
  5. 1.291
  6. 0.0768
  7. 0.0659
  8. 0.03721
  9. 414
  10. 310900
  11. 10200
  12. 0.2188
  13. 27.24
  14. 1.067
  15. 0.2865
  16. 0.2381
  17. 39960
  18. 3402
  19. 2678
  20. 4.553
  21. 491.5
  22. 3197
  23. 0.3781
  24. 147.7
  25. 11620
  26. 3.414
  27. 19440
  28. 470.4
  29. 3534
  30. 0.03809
  31. 7110
  32. 29.76
  33. 3066
  34. 0.0102
  35. 64.1
  36. 164900
  37. 22.28
  38. 0.0922
  39. 0.13
  40. 391.5

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