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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 508 · 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. 1.193.3 × 100 =
  2. 2.305.8 ÷ 10 =
  3. 3.335.7 × 1000 =
  4. 4.303.5 ÷ 1000 =
  5. 5.240.8 ÷ 100 =
  6. 6.194.2 ÷ 10 =
  7. 7.430.1 ÷ 1000 =
  8. 8.24.1 ÷ 10 =
  9. 9.69.3 × 10 =
  10. 10.12.41 ÷ 10 =
  11. 11.36.89 × 10 =
  12. 12.35.17 ÷ 100 =
  13. 13.81.2 × 1000 =
  14. 14.356.1 × 10 =
  15. 15.8.67 × 100 =
  16. 16.358.9 × 10 =
  17. 17.423.4 × 100 =
  18. 18.455.1 ÷ 10 =
  19. 19.172.1 × 10 =
  20. 20.9.61 ÷ 100 =
  21. 21.347.3 ÷ 1000 =
  22. 22.11.32 × 1000 =
  23. 23.43.61 ÷ 1000 =
  24. 24.106.8 × 1000 =
  25. 25.144.1 ÷ 1000 =
  26. 26.21.82 ÷ 10 =
  27. 27.25.03 × 1000 =
  28. 28.103.3 ÷ 10 =
  29. 29.8.21 × 10 =
  30. 30.286.1 × 10 =
  31. 31.489.8 × 100 =
  32. 32.101.4 ÷ 100 =
  33. 33.315.9 × 100 =
  34. 34.41.67 × 1000 =
  35. 35.3.44 × 100 =
  36. 36.169.6 ÷ 100 =
  37. 37.447.2 × 10 =
  38. 38.30.75 ÷ 10 =
  39. 39.288.1 ÷ 1000 =
  40. 40.31.2 × 10 =

Answer key

  1. 19330
  2. 30.58
  3. 335700
  4. 0.3035
  5. 2.408
  6. 19.42
  7. 0.4301
  8. 2.41
  9. 693
  10. 1.241
  11. 368.9
  12. 0.3517
  13. 81200
  14. 3561
  15. 867
  16. 3589
  17. 42340
  18. 45.51
  19. 1721
  20. 0.0961
  21. 0.3473
  22. 11320
  23. 0.04361
  24. 106800
  25. 0.1441
  26. 2.182
  27. 25030
  28. 10.33
  29. 82.1
  30. 2861
  31. 48980
  32. 1.014
  33. 31590
  34. 41670
  35. 344
  36. 1.696
  37. 4472
  38. 3.075
  39. 0.2881
  40. 312

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