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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 340 · 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. 1.284.1 ÷ 1000 =
  2. 2.144.5 × 1000 =
  3. 3.36.01 ÷ 100 =
  4. 4.1.12 × 100 =
  5. 5.18.11 × 1000 =
  6. 6.56.6 × 10 =
  7. 7.203.1 × 10 =
  8. 8.225.5 × 100 =
  9. 9.446.1 ÷ 10 =
  10. 10.78.6 × 10 =
  11. 11.41.01 × 100 =
  12. 12.4.19 × 100 =
  13. 13.123.4 ÷ 100 =
  14. 14.14.61 ÷ 100 =
  15. 15.43.85 ÷ 10 =
  16. 16.33.26 ÷ 10 =
  17. 17.37.01 × 100 =
  18. 18.275.3 × 10 =
  19. 19.414.1 ÷ 100 =
  20. 20.320.3 ÷ 100 =
  21. 21.39.61 ÷ 1000 =
  22. 22.17.59 × 100 =
  23. 23.28.39 × 10 =
  24. 24.324.3 × 10 =
  25. 25.409.6 × 10 =
  26. 26.7.68 × 10 =
  27. 27.19.6 ÷ 10 =
  28. 28.446.3 ÷ 1000 =
  29. 29.308.3 × 1000 =
  30. 30.71.3 × 10 =
  31. 31.38.31 × 10 =
  32. 32.3.1 ÷ 100 =
  33. 33.306.3 × 100 =
  34. 34.128.3 × 1000 =
  35. 35.180.6 ÷ 100 =
  36. 36.7.14 × 100 =
  37. 37.170.4 ÷ 10 =
  38. 38.13.79 × 10 =
  39. 39.293.7 ÷ 10 =
  40. 40.6.53 ÷ 10 =

Answer key

  1. 0.2841
  2. 144500
  3. 0.3601
  4. 112
  5. 18110
  6. 566
  7. 2031
  8. 22550
  9. 44.61
  10. 786
  11. 4101
  12. 419
  13. 1.234
  14. 0.1461
  15. 4.385
  16. 3.326
  17. 3701
  18. 2753
  19. 4.141
  20. 3.203
  21. 0.03961
  22. 1759
  23. 283.9
  24. 3243
  25. 4096
  26. 76.8
  27. 1.96
  28. 0.4463
  29. 308300
  30. 713
  31. 383.1
  32. 0.031
  33. 30630
  34. 128300
  35. 1.806
  36. 714
  37. 17.04
  38. 137.9
  39. 29.37
  40. 0.653

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