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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 979 · 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. 1.369.1 ÷ 1000 =
  2. 2.32.81 ÷ 1000 =
  3. 3.3.74 × 1000 =
  4. 4.39.61 ÷ 100 =
  5. 5.10.41 × 100 =
  6. 6.169.9 × 100 =
  7. 7.35.91 × 100 =
  8. 8.3.32 ÷ 100 =
  9. 9.375.6 × 100 =
  10. 10.379.9 × 1000 =
  11. 11.493.7 ÷ 10 =
  12. 12.56.4 × 100 =
  13. 13.155.1 × 100 =
  14. 14.308.8 ÷ 10 =
  15. 15.386.6 ÷ 10 =
  16. 16.377.1 × 100 =
  17. 17.425.4 × 10 =
  18. 18.19.4 × 1000 =
  19. 19.137.2 ÷ 1000 =
  20. 20.449.8 × 1000 =
  21. 21.294.2 ÷ 10 =
  22. 22.396.3 ÷ 100 =
  23. 23.241.9 × 10 =
  24. 24.29.4 ÷ 10 =
  25. 25.116.1 ÷ 10 =
  26. 26.117.1 × 10 =
  27. 27.24.9 × 100 =
  28. 28.173.1 × 10 =
  29. 29.191.5 × 100 =
  30. 30.33.01 × 100 =
  31. 31.132.7 ÷ 10 =
  32. 32.36.99 ÷ 1000 =
  33. 33.2.43 ÷ 10 =
  34. 34.485.3 × 1000 =
  35. 35.24.75 × 1000 =
  36. 36.26.17 × 10 =
  37. 37.407.3 ÷ 100 =
  38. 38.16.44 × 10 =
  39. 39.76.7 × 100 =
  40. 40.212.4 ÷ 10 =

Answer key

  1. 0.3691
  2. 0.03281
  3. 3740
  4. 0.3961
  5. 1041
  6. 16990
  7. 3591
  8. 0.0332
  9. 37560
  10. 379900
  11. 49.37
  12. 5640
  13. 15510
  14. 30.88
  15. 38.66
  16. 37710
  17. 4254
  18. 19400
  19. 0.1372
  20. 449800
  21. 29.42
  22. 3.963
  23. 2419
  24. 2.94
  25. 11.61
  26. 1171
  27. 2490
  28. 1731
  29. 19150
  30. 3301
  31. 13.27
  32. 0.03699
  33. 0.243
  34. 485300
  35. 24750
  36. 261.7
  37. 4.073
  38. 164.4
  39. 7670
  40. 21.24

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