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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 494 · 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. 1.6.46 × 1000 =
  2. 2.43.87 × 10 =
  3. 3.420.7 × 1000 =
  4. 4.8.1 ÷ 100 =
  5. 5.63.8 × 100 =
  6. 6.24.44 ÷ 10 =
  7. 7.22.23 × 100 =
  8. 8.13.91 × 1000 =
  9. 9.221.9 ÷ 100 =
  10. 10.452.5 × 10 =
  11. 11.457.9 ÷ 10 =
  12. 12.30.59 ÷ 10 =
  13. 13.41.13 × 100 =
  14. 14.4.99 × 10 =
  15. 15.23.17 × 10 =
  16. 16.31.81 × 10 =
  17. 17.8.32 ÷ 100 =
  18. 18.499.7 ÷ 100 =
  19. 19.5.09 × 10 =
  20. 20.9.5 × 100 =
  21. 21.44.51 ÷ 10 =
  22. 22.11.41 × 100 =
  23. 23.403.6 × 1000 =
  24. 24.39.5 × 10 =
  25. 25.219.7 ÷ 10 =
  26. 26.31.98 ÷ 10 =
  27. 27.42.5 ÷ 1000 =
  28. 28.33.16 × 100 =
  29. 29.15.4 ÷ 10 =
  30. 30.11.64 ÷ 10 =
  31. 31.20.05 ÷ 1000 =
  32. 32.18.57 × 100 =
  33. 33.12.51 ÷ 100 =
  34. 34.337.9 × 10 =
  35. 35.27.66 × 100 =
  36. 36.377.3 × 100 =
  37. 37.45.43 ÷ 1000 =
  38. 38.2.52 × 1000 =
  39. 39.357.5 ÷ 10 =
  40. 40.107.8 × 100 =

Answer key

  1. 6460
  2. 438.7
  3. 420700
  4. 0.081
  5. 6380
  6. 2.444
  7. 2223
  8. 13910
  9. 2.219
  10. 4525
  11. 45.79
  12. 3.059
  13. 4113
  14. 49.9
  15. 231.7
  16. 318.1
  17. 0.0832
  18. 4.997
  19. 50.9
  20. 950
  21. 4.451
  22. 1141
  23. 403600
  24. 395
  25. 21.97
  26. 3.198
  27. 0.0425
  28. 3316
  29. 1.54
  30. 1.164
  31. 0.02005
  32. 1857
  33. 0.1251
  34. 3379
  35. 2766
  36. 37730
  37. 0.04543
  38. 2520
  39. 35.75
  40. 10780

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