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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 229 · 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. 1.372.4 × 1000 =
  2. 2.415.9 ÷ 10 =
  3. 3.41.72 ÷ 100 =
  4. 4.3.01 × 100 =
  5. 5.307.4 ÷ 10 =
  6. 6.29.91 ÷ 10 =
  7. 7.35.62 × 100 =
  8. 8.97.6 ÷ 1000 =
  9. 9.56.3 ÷ 100 =
  10. 10.336.6 × 100 =
  11. 11.24.13 × 10 =
  12. 12.14.04 × 1000 =
  13. 13.40.33 ÷ 100 =
  14. 14.483.5 ÷ 10 =
  15. 15.352.8 × 100 =
  16. 16.308.1 × 10 =
  17. 17.4.32 × 100 =
  18. 18.45.96 × 10 =
  19. 19.128.5 ÷ 1000 =
  20. 20.29.21 ÷ 100 =
  21. 21.26.91 × 1000 =
  22. 22.356.4 × 100 =
  23. 23.436.3 × 1000 =
  24. 24.15.12 × 10 =
  25. 25.50.9 × 1000 =
  26. 26.45.94 ÷ 100 =
  27. 27.17.41 ÷ 10 =
  28. 28.21.1 ÷ 10 =
  29. 29.46.1 ÷ 10 =
  30. 30.403.1 ÷ 10 =
  31. 31.15.22 × 10 =
  32. 32.382.8 ÷ 1000 =
  33. 33.47.01 × 10 =
  34. 34.115.9 × 10 =
  35. 35.380.8 × 100 =
  36. 36.31.61 × 100 =
  37. 37.464.6 ÷ 1000 =
  38. 38.150.4 × 10 =
  39. 39.10.65 × 10 =
  40. 40.3.16 × 100 =

Answer key

  1. 372400
  2. 41.59
  3. 0.4172
  4. 301
  5. 30.74
  6. 2.991
  7. 3562
  8. 0.0976
  9. 0.563
  10. 33660
  11. 241.3
  12. 14040
  13. 0.4033
  14. 48.35
  15. 35280
  16. 3081
  17. 432
  18. 459.6
  19. 0.1285
  20. 0.2921
  21. 26910
  22. 35640
  23. 436300
  24. 151.2
  25. 50900
  26. 0.4594
  27. 1.741
  28. 2.11
  29. 4.61
  30. 40.31
  31. 152.2
  32. 0.3828
  33. 470.1
  34. 1159
  35. 38080
  36. 3161
  37. 0.4646
  38. 1504
  39. 106.5
  40. 316

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