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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 645 · 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. 1.35.23 × 10 =
  2. 2.23.19 ÷ 10 =
  3. 3.33.87 ÷ 10 =
  4. 4.294.5 × 1000 =
  5. 5.391.1 × 10 =
  6. 6.434.9 ÷ 10 =
  7. 7.116.2 ÷ 1000 =
  8. 8.31.33 ÷ 1000 =
  9. 9.103.6 × 1000 =
  10. 10.37.86 ÷ 100 =
  11. 11.204.3 × 1000 =
  12. 12.41.2 ÷ 10 =
  13. 13.9.02 × 10 =
  14. 14.459.3 × 1000 =
  15. 15.368.1 ÷ 100 =
  16. 16.47.52 ÷ 100 =
  17. 17.36.51 × 1000 =
  18. 18.23.66 × 100 =
  19. 19.47.43 × 1000 =
  20. 20.6.81 × 100 =
  21. 21.8.01 × 100 =
  22. 22.29.82 ÷ 10 =
  23. 23.29.23 ÷ 10 =
  24. 24.443.9 ÷ 1000 =
  25. 25.135.8 ÷ 10 =
  26. 26.14.52 × 1000 =
  27. 27.213.1 ÷ 10 =
  28. 28.33.78 ÷ 100 =
  29. 29.71.5 ÷ 10 =
  30. 30.18.39 ÷ 1000 =
  31. 31.12.01 × 100 =
  32. 32.224.8 ÷ 10 =
  33. 33.381.2 × 100 =
  34. 34.178.9 ÷ 10 =
  35. 35.230.1 × 10 =
  36. 36.11.63 × 10 =
  37. 37.360.2 × 1000 =
  38. 38.2.5 × 100 =
  39. 39.498.9 ÷ 10 =
  40. 40.49.1 × 1000 =

Answer key

  1. 352.3
  2. 2.319
  3. 3.387
  4. 294500
  5. 3911
  6. 43.49
  7. 0.1162
  8. 0.03133
  9. 103600
  10. 0.3786
  11. 204300
  12. 4.12
  13. 90.2
  14. 459300
  15. 3.681
  16. 0.4752
  17. 36510
  18. 2366
  19. 47430
  20. 681
  21. 801
  22. 2.982
  23. 2.923
  24. 0.4439
  25. 13.58
  26. 14520
  27. 21.31
  28. 0.3378
  29. 7.15
  30. 0.01839
  31. 1201
  32. 22.48
  33. 38120
  34. 17.89
  35. 2301
  36. 116.3
  37. 360200
  38. 250
  39. 49.89
  40. 49100

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