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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 68 · 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. 1.35.06 × 1000 =
  2. 2.390.8 ÷ 1000 =
  3. 3.0.17 ÷ 10 =
  4. 4.10.93 × 10 =
  5. 5.456.3 × 100 =
  6. 6.339.5 × 1000 =
  7. 7.285.2 ÷ 1000 =
  8. 8.7.34 × 10 =
  9. 9.25.75 × 10 =
  10. 10.474.3 ÷ 10 =
  11. 11.29.79 ÷ 10 =
  12. 12.191.1 × 1000 =
  13. 13.366.9 ÷ 100 =
  14. 14.193.7 × 100 =
  15. 15.131.6 × 1000 =
  16. 16.36.8 × 100 =
  17. 17.310.7 × 1000 =
  18. 18.29.2 ÷ 100 =
  19. 19.157.5 ÷ 10 =
  20. 20.43.52 ÷ 10 =
  21. 21.167.2 × 1000 =
  22. 22.170.9 × 1000 =
  23. 23.41.36 ÷ 1000 =
  24. 24.20.59 × 100 =
  25. 25.408.4 ÷ 10 =
  26. 26.1.99 ÷ 100 =
  27. 27.8.51 ÷ 10 =
  28. 28.62.8 × 1000 =
  29. 29.90.6 × 10 =
  30. 30.6.79 × 1000 =
  31. 31.334.1 × 10 =
  32. 32.22.61 × 100 =
  33. 33.398.8 × 100 =
  34. 34.229.2 ÷ 1000 =
  35. 35.4.74 ÷ 10 =
  36. 36.3.01 × 1000 =
  37. 37.12.04 × 10 =
  38. 38.147.6 × 100 =
  39. 39.421.6 × 10 =
  40. 40.20.35 × 10 =

Answer key

  1. 35060
  2. 0.3908
  3. 0.017
  4. 109.3
  5. 45630
  6. 339500
  7. 0.2852
  8. 73.4
  9. 257.5
  10. 47.43
  11. 2.979
  12. 191100
  13. 3.669
  14. 19370
  15. 131600
  16. 3680
  17. 310700
  18. 0.292
  19. 15.75
  20. 4.352
  21. 167200
  22. 170900
  23. 0.04136
  24. 2059
  25. 40.84
  26. 0.0199
  27. 0.851
  28. 62800
  29. 906
  30. 6790
  31. 3341
  32. 2261
  33. 39880
  34. 0.2292
  35. 0.474
  36. 3010
  37. 120.4
  38. 14760
  39. 4216
  40. 203.5

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