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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 875 · 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. 1.98.6 × 100 =
  2. 2.449.5 ÷ 1000 =
  3. 3.19.16 ÷ 10 =
  4. 4.420.6 × 1000 =
  5. 5.12.71 × 100 =
  6. 6.79.3 ÷ 10 =
  7. 7.7.11 ÷ 1000 =
  8. 8.42.89 ÷ 100 =
  9. 9.46.47 × 100 =
  10. 10.244.7 ÷ 10 =
  11. 11.336.9 ÷ 100 =
  12. 12.13.7 × 10 =
  13. 13.199.5 ÷ 100 =
  14. 14.430.8 ÷ 10 =
  15. 15.28.39 × 1000 =
  16. 16.173.1 × 1000 =
  17. 17.296.5 × 100 =
  18. 18.396.2 ÷ 10 =
  19. 19.20.11 ÷ 1000 =
  20. 20.409.7 ÷ 1000 =
  21. 21.40.75 × 100 =
  22. 22.46.02 ÷ 1000 =
  23. 23.8.72 × 100 =
  24. 24.389.4 × 100 =
  25. 25.8.86 × 100 =
  26. 26.10.13 × 1000 =
  27. 27.317.4 ÷ 10 =
  28. 28.335.8 ÷ 10 =
  29. 29.25.61 × 1000 =
  30. 30.13.9 ÷ 1000 =
  31. 31.144.2 ÷ 10 =
  32. 32.315.9 ÷ 10 =
  33. 33.15.49 × 100 =
  34. 34.438.9 × 1000 =
  35. 35.16.65 ÷ 10 =
  36. 36.37.5 × 10 =
  37. 37.409.5 × 100 =
  38. 38.2.23 × 10 =
  39. 39.313.3 ÷ 100 =
  40. 40.5.88 × 10 =

Answer key

  1. 9860
  2. 0.4495
  3. 1.916
  4. 420600
  5. 1271
  6. 7.93
  7. 0.00711
  8. 0.4289
  9. 4647
  10. 24.47
  11. 3.369
  12. 137
  13. 1.995
  14. 43.08
  15. 28390
  16. 173100
  17. 29650
  18. 39.62
  19. 0.02011
  20. 0.4097
  21. 4075
  22. 0.04602
  23. 872
  24. 38940
  25. 886
  26. 10130
  27. 31.74
  28. 33.58
  29. 25610
  30. 0.0139
  31. 14.42
  32. 31.59
  33. 1549
  34. 438900
  35. 1.665
  36. 375
  37. 40950
  38. 22.3
  39. 3.133
  40. 58.8

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