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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 319 · 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. 1.298.7 × 10 =
  2. 2.48.82 × 1000 =
  3. 3.15.56 × 100 =
  4. 4.213.1 × 100 =
  5. 5.335.1 ÷ 1000 =
  6. 6.405.3 ÷ 1000 =
  7. 7.275.8 × 1000 =
  8. 8.35.09 ÷ 10 =
  9. 9.208.3 ÷ 10 =
  10. 10.179.8 ÷ 100 =
  11. 11.35.27 × 1000 =
  12. 12.312.1 × 10 =
  13. 13.96.4 ÷ 10 =
  14. 14.110.7 × 10 =
  15. 15.74.1 × 1000 =
  16. 16.41.37 ÷ 1000 =
  17. 17.152.5 × 100 =
  18. 18.85.1 ÷ 1000 =
  19. 19.469.2 × 1000 =
  20. 20.90.3 × 1000 =
  21. 21.5.05 × 1000 =
  22. 22.306.7 ÷ 100 =
  23. 23.28.81 × 100 =
  24. 24.303.1 × 100 =
  25. 25.24.88 ÷ 10 =
  26. 26.400.2 ÷ 10 =
  27. 27.161.2 ÷ 1000 =
  28. 28.12.29 ÷ 100 =
  29. 29.203.9 × 100 =
  30. 30.440.5 ÷ 10 =
  31. 31.201.9 ÷ 1000 =
  32. 32.38.31 ÷ 100 =
  33. 33.21.18 × 100 =
  34. 34.19.66 × 10 =
  35. 35.7.93 ÷ 1000 =
  36. 36.218.7 × 10 =
  37. 37.426.6 ÷ 1000 =
  38. 38.30.59 ÷ 10 =
  39. 39.341.6 × 10 =
  40. 40.14.84 × 100 =

Answer key

  1. 2987
  2. 48820
  3. 1556
  4. 21310
  5. 0.3351
  6. 0.4053
  7. 275800
  8. 3.509
  9. 20.83
  10. 1.798
  11. 35270
  12. 3121
  13. 9.64
  14. 1107
  15. 74100
  16. 0.04137
  17. 15250
  18. 0.0851
  19. 469200
  20. 90300
  21. 5050
  22. 3.067
  23. 2881
  24. 30310
  25. 2.488
  26. 40.02
  27. 0.1612
  28. 0.1229
  29. 20390
  30. 44.05
  31. 0.2019
  32. 0.3831
  33. 2118
  34. 196.6
  35. 0.00793
  36. 2187
  37. 0.4266
  38. 3.059
  39. 3416
  40. 1484

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