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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 322 · 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. 1.11.97 × 10 =
  2. 2.14.15 × 1000 =
  3. 3.143.3 × 100 =
  4. 4.19.4 × 1000 =
  5. 5.451.3 ÷ 1000 =
  6. 6.435.5 ÷ 1000 =
  7. 7.35.84 × 10 =
  8. 8.73.4 ÷ 1000 =
  9. 9.332.5 × 1000 =
  10. 10.318.3 ÷ 1000 =
  11. 11.484.1 × 100 =
  12. 12.386.5 × 100 =
  13. 13.496.1 × 100 =
  14. 14.47.91 × 1000 =
  15. 15.203.4 ÷ 10 =
  16. 16.28.45 × 1000 =
  17. 17.119.1 × 100 =
  18. 18.470.8 ÷ 100 =
  19. 19.439.2 × 1000 =
  20. 20.196.9 ÷ 10 =
  21. 21.37.5 × 100 =
  22. 22.141.8 ÷ 100 =
  23. 23.8.39 ÷ 100 =
  24. 24.355.3 ÷ 1000 =
  25. 25.40.3 ÷ 10 =
  26. 26.39.02 × 100 =
  27. 27.235.5 ÷ 100 =
  28. 28.31.75 × 1000 =
  29. 29.244.7 ÷ 10 =
  30. 30.80.4 ÷ 10 =
  31. 31.268.7 × 1000 =
  32. 32.28.71 ÷ 1000 =
  33. 33.42.12 × 100 =
  34. 34.171.1 ÷ 10 =
  35. 35.11.04 ÷ 10 =
  36. 36.100.7 × 1000 =
  37. 37.21.01 ÷ 1000 =
  38. 38.383.4 × 1000 =
  39. 39.211.1 ÷ 100 =
  40. 40.12.96 ÷ 10 =

Answer key

  1. 119.7
  2. 14150
  3. 14330
  4. 19400
  5. 0.4513
  6. 0.4355
  7. 358.4
  8. 0.0734
  9. 332500
  10. 0.3183
  11. 48410
  12. 38650
  13. 49610
  14. 47910
  15. 20.34
  16. 28450
  17. 11910
  18. 4.708
  19. 439200
  20. 19.69
  21. 3750
  22. 1.418
  23. 0.0839
  24. 0.3553
  25. 4.03
  26. 3902
  27. 2.355
  28. 31750
  29. 24.47
  30. 8.04
  31. 268700
  32. 0.02871
  33. 4212
  34. 17.11
  35. 1.104
  36. 100700
  37. 0.02101
  38. 383400
  39. 2.111
  40. 1.296

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