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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 204 · 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. 1.80.1 × 100 =
  2. 2.0.37 × 100 =
  3. 3.129.1 ÷ 10 =
  4. 4.23.54 × 10 =
  5. 5.39.25 ÷ 100 =
  6. 6.458.2 ÷ 10 =
  7. 7.2.41 × 1000 =
  8. 8.26.41 ÷ 10 =
  9. 9.381.3 × 100 =
  10. 10.112.1 × 1000 =
  11. 11.14.73 × 1000 =
  12. 12.470.1 × 100 =
  13. 13.243.5 × 100 =
  14. 14.316.3 ÷ 1000 =
  15. 15.11.39 ÷ 1000 =
  16. 16.44.21 × 10 =
  17. 17.26.87 ÷ 100 =
  18. 18.42.31 ÷ 1000 =
  19. 19.55.3 ÷ 100 =
  20. 20.275.7 ÷ 10 =
  21. 21.184.2 × 1000 =
  22. 22.465.2 ÷ 100 =
  23. 23.49.16 ÷ 100 =
  24. 24.9.81 × 100 =
  25. 25.206.2 × 100 =
  26. 26.12.04 ÷ 100 =
  27. 27.45.71 × 100 =
  28. 28.24.45 ÷ 10 =
  29. 29.66.7 ÷ 10 =
  30. 30.45.78 × 10 =
  31. 31.41.6 ÷ 1000 =
  32. 32.36.75 × 1000 =
  33. 33.27.13 ÷ 10 =
  34. 34.16.91 × 10 =
  35. 35.282.8 × 1000 =
  36. 36.158.9 ÷ 10 =
  37. 37.44.22 × 10 =
  38. 38.249.9 × 1000 =
  39. 39.11.49 × 1000 =
  40. 40.152.6 × 100 =

Answer key

  1. 8010
  2. 37
  3. 12.91
  4. 235.4
  5. 0.3925
  6. 45.82
  7. 2410
  8. 2.641
  9. 38130
  10. 112100
  11. 14730
  12. 47010
  13. 24350
  14. 0.3163
  15. 0.01139
  16. 442.1
  17. 0.2687
  18. 0.04231
  19. 0.553
  20. 27.57
  21. 184200
  22. 4.652
  23. 0.4916
  24. 981
  25. 20620
  26. 0.1204
  27. 4571
  28. 2.445
  29. 6.67
  30. 457.8
  31. 0.0416
  32. 36750
  33. 2.713
  34. 169.1
  35. 282800
  36. 15.89
  37. 442.2
  38. 249900
  39. 11490
  40. 15260

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