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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 335 · 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. 1.45.42 × 1000 =
  2. 2.3.82 ÷ 100 =
  3. 3.44.59 ÷ 10 =
  4. 4.11.41 × 10 =
  5. 5.281.1 × 10 =
  6. 6.23.37 × 100 =
  7. 7.12.8 ÷ 100 =
  8. 8.414.4 ÷ 100 =
  9. 9.373.4 ÷ 100 =
  10. 10.54.4 × 10 =
  11. 11.388.2 × 10 =
  12. 12.25.17 × 10 =
  13. 13.41.84 ÷ 10 =
  14. 14.21.41 ÷ 100 =
  15. 15.237.8 ÷ 100 =
  16. 16.162.2 ÷ 100 =
  17. 17.441.1 × 10 =
  18. 18.314.3 × 100 =
  19. 19.101.1 ÷ 100 =
  20. 20.415.7 ÷ 10 =
  21. 21.89.1 × 10 =
  22. 22.13.54 ÷ 10 =
  23. 23.311.3 ÷ 10 =
  24. 24.73.1 ÷ 100 =
  25. 25.48.43 × 1000 =
  26. 26.32.2 × 10 =
  27. 27.47.77 ÷ 100 =
  28. 28.303.9 ÷ 1000 =
  29. 29.474.3 × 1000 =
  30. 30.310.2 × 100 =
  31. 31.422.2 × 1000 =
  32. 32.26.24 ÷ 10 =
  33. 33.16.04 ÷ 1000 =
  34. 34.213.6 ÷ 10 =
  35. 35.422.4 ÷ 10 =
  36. 36.453.9 × 100 =
  37. 37.7.35 ÷ 100 =
  38. 38.35.1 ÷ 100 =
  39. 39.3.79 ÷ 1000 =
  40. 40.115.7 ÷ 100 =

Answer key

  1. 45420
  2. 0.0382
  3. 4.459
  4. 114.1
  5. 2811
  6. 2337
  7. 0.128
  8. 4.144
  9. 3.734
  10. 544
  11. 3882
  12. 251.7
  13. 4.184
  14. 0.2141
  15. 2.378
  16. 1.622
  17. 4411
  18. 31430
  19. 1.011
  20. 41.57
  21. 891
  22. 1.354
  23. 31.13
  24. 0.731
  25. 48430
  26. 322
  27. 0.4777
  28. 0.3039
  29. 474300
  30. 31020
  31. 422200
  32. 2.624
  33. 0.01604
  34. 21.36
  35. 42.24
  36. 45390
  37. 0.0735
  38. 0.351
  39. 0.00379
  40. 1.157

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