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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 487 · 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. 1.19.85 ÷ 1000 =
  2. 2.296.1 ÷ 10 =
  3. 3.6.45 × 1000 =
  4. 4.13.41 × 100 =
  5. 5.351.3 × 10 =
  6. 6.36.15 × 100 =
  7. 7.6.61 ÷ 10 =
  8. 8.48.51 × 1000 =
  9. 9.8.23 ÷ 1000 =
  10. 10.39.2 ÷ 1000 =
  11. 11.133.7 × 1000 =
  12. 12.361.6 × 100 =
  13. 13.46.77 × 1000 =
  14. 14.43.08 ÷ 10 =
  15. 15.42.94 × 10 =
  16. 16.135.2 ÷ 100 =
  17. 17.13.85 ÷ 100 =
  18. 18.11.1 ÷ 1000 =
  19. 19.92.4 × 10 =
  20. 20.6.1 ÷ 10 =
  21. 21.188.1 ÷ 10 =
  22. 22.66.5 × 1000 =
  23. 23.496.6 × 10 =
  24. 24.2.68 × 1000 =
  25. 25.12.74 × 1000 =
  26. 26.21.21 × 100 =
  27. 27.20.94 ÷ 100 =
  28. 28.20.62 × 10 =
  29. 29.2.08 × 1000 =
  30. 30.478.5 ÷ 1000 =
  31. 31.21.96 × 100 =
  32. 32.437.4 ÷ 100 =
  33. 33.77.6 × 10 =
  34. 34.139.9 ÷ 1000 =
  35. 35.16.43 ÷ 1000 =
  36. 36.382.7 × 1000 =
  37. 37.435.4 × 100 =
  38. 38.143.4 × 100 =
  39. 39.2.86 × 10 =
  40. 40.20.16 × 100 =

Answer key

  1. 0.01985
  2. 29.61
  3. 6450
  4. 1341
  5. 3513
  6. 3615
  7. 0.661
  8. 48510
  9. 0.00823
  10. 0.0392
  11. 133700
  12. 36160
  13. 46770
  14. 4.308
  15. 429.4
  16. 1.352
  17. 0.1385
  18. 0.0111
  19. 924
  20. 0.61
  21. 18.81
  22. 66500
  23. 4966
  24. 2680
  25. 12740
  26. 2121
  27. 0.2094
  28. 206.2
  29. 2080
  30. 0.4785
  31. 2196
  32. 4.374
  33. 776
  34. 0.1399
  35. 0.01643
  36. 382700
  37. 43540
  38. 14340
  39. 28.6
  40. 2016

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