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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 466 · 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. 1.1.73 × 1000 =
  2. 2.16.14 ÷ 100 =
  3. 3.40.21 × 100 =
  4. 4.34.86 × 10 =
  5. 5.0.59 ÷ 10 =
  6. 6.115.1 ÷ 10 =
  7. 7.12.02 × 10 =
  8. 8.445.3 × 100 =
  9. 9.303.6 × 100 =
  10. 10.302.3 × 100 =
  11. 11.492.1 × 1000 =
  12. 12.19.7 × 10 =
  13. 13.228.1 × 100 =
  14. 14.433.7 ÷ 10 =
  15. 15.448.8 × 100 =
  16. 16.284.2 × 100 =
  17. 17.56.6 × 10 =
  18. 18.16.22 × 10 =
  19. 19.14.54 × 100 =
  20. 20.169.5 × 1000 =
  21. 21.444.4 × 10 =
  22. 22.72.1 × 10 =
  23. 23.303.8 × 1000 =
  24. 24.19.41 × 1000 =
  25. 25.34.4 ÷ 1000 =
  26. 26.12.31 ÷ 10 =
  27. 27.23.68 ÷ 100 =
  28. 28.39.08 × 100 =
  29. 29.55.8 × 10 =
  30. 30.369.3 ÷ 10 =
  31. 31.23.32 ÷ 1000 =
  32. 32.43.01 ÷ 10 =
  33. 33.21.14 × 10 =
  34. 34.5.32 × 100 =
  35. 35.12.41 × 100 =
  36. 36.411.1 ÷ 10 =
  37. 37.4.41 × 100 =
  38. 38.46.5 × 1000 =
  39. 39.3.7 ÷ 10 =
  40. 40.42.21 ÷ 10 =

Answer key

  1. 1730
  2. 0.1614
  3. 4021
  4. 348.6
  5. 0.059
  6. 11.51
  7. 120.2
  8. 44530
  9. 30360
  10. 30230
  11. 492100
  12. 197
  13. 22810
  14. 43.37
  15. 44880
  16. 28420
  17. 566
  18. 162.2
  19. 1454
  20. 169500
  21. 4444
  22. 721
  23. 303800
  24. 19410
  25. 0.0344
  26. 1.231
  27. 0.2368
  28. 3908
  29. 558
  30. 36.93
  31. 0.02332
  32. 4.301
  33. 211.4
  34. 532
  35. 1241
  36. 41.11
  37. 441
  38. 46500
  39. 0.37
  40. 4.221

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