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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 36 · 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. 1.9.15 × 10 =
  2. 2.157.8 ÷ 10 =
  3. 3.8.93 × 100 =
  4. 4.6.51 ÷ 10 =
  5. 5.102.5 ÷ 1000 =
  6. 6.19.31 × 1000 =
  7. 7.47.32 × 10 =
  8. 8.15.73 × 100 =
  9. 9.22.53 ÷ 1000 =
  10. 10.34.42 × 100 =
  11. 11.27.22 ÷ 10 =
  12. 12.48.01 × 100 =
  13. 13.219.3 ÷ 1000 =
  14. 14.19.59 × 1000 =
  15. 15.26.25 ÷ 10 =
  16. 16.39.08 × 100 =
  17. 17.157.1 ÷ 1000 =
  18. 18.136.8 ÷ 10 =
  19. 19.21.65 × 10 =
  20. 20.7.04 × 10 =
  21. 21.23.81 ÷ 100 =
  22. 22.14.7 ÷ 1000 =
  23. 23.307.5 × 100 =
  24. 24.41.78 ÷ 10 =
  25. 25.252.1 × 100 =
  26. 26.49.32 × 1000 =
  27. 27.193.1 × 10 =
  28. 28.326.2 × 10 =
  29. 29.219.8 × 1000 =
  30. 30.20.19 × 100 =
  31. 31.454.1 × 10 =
  32. 32.6.27 × 1000 =
  33. 33.184.4 × 100 =
  34. 34.2.14 ÷ 10 =
  35. 35.311.5 ÷ 10 =
  36. 36.206.7 × 100 =
  37. 37.394.7 × 10 =
  38. 38.30.7 ÷ 100 =
  39. 39.35.68 ÷ 100 =
  40. 40.408.2 ÷ 10 =

Answer key

  1. 91.5
  2. 15.78
  3. 893
  4. 0.651
  5. 0.1025
  6. 19310
  7. 473.2
  8. 1573
  9. 0.02253
  10. 3442
  11. 2.722
  12. 4801
  13. 0.2193
  14. 19590
  15. 2.625
  16. 3908
  17. 0.1571
  18. 13.68
  19. 216.5
  20. 70.4
  21. 0.2381
  22. 0.0147
  23. 30750
  24. 4.178
  25. 25210
  26. 49320
  27. 1931
  28. 3262
  29. 219800
  30. 2019
  31. 4541
  32. 6270
  33. 18440
  34. 0.214
  35. 31.15
  36. 20670
  37. 3947
  38. 0.307
  39. 0.3568
  40. 40.82

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