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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 380 · 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. 1.127.3 ÷ 10 =
  2. 2.2.32 × 1000 =
  3. 3.42.79 ÷ 100 =
  4. 4.149.7 ÷ 100 =
  5. 5.30.09 × 10 =
  6. 6.32.71 × 10 =
  7. 7.106.1 ÷ 10 =
  8. 8.377.3 × 100 =
  9. 9.8.91 ÷ 10 =
  10. 10.26.57 × 1000 =
  11. 11.14.49 × 100 =
  12. 12.25.82 ÷ 10 =
  13. 13.37.36 ÷ 10 =
  14. 14.26.99 ÷ 1000 =
  15. 15.247.6 × 1000 =
  16. 16.12.61 × 1000 =
  17. 17.82.8 ÷ 10 =
  18. 18.48.44 ÷ 1000 =
  19. 19.6.52 ÷ 1000 =
  20. 20.60.2 ÷ 10 =
  21. 21.383.2 × 1000 =
  22. 22.434.6 ÷ 10 =
  23. 23.32.18 ÷ 10 =
  24. 24.0.99 × 10 =
  25. 25.7.77 ÷ 10 =
  26. 26.2.61 ÷ 1000 =
  27. 27.15.05 × 1000 =
  28. 28.2.59 ÷ 100 =
  29. 29.25.21 × 10 =
  30. 30.1.71 ÷ 10 =
  31. 31.5.56 × 1000 =
  32. 32.326.1 ÷ 100 =
  33. 33.28.4 × 1000 =
  34. 34.419.3 × 1000 =
  35. 35.406.3 × 10 =
  36. 36.37.76 ÷ 10 =
  37. 37.314.3 ÷ 1000 =
  38. 38.33.76 × 100 =
  39. 39.50.1 × 1000 =
  40. 40.471.6 × 1000 =

Answer key

  1. 12.73
  2. 2320
  3. 0.4279
  4. 1.497
  5. 300.9
  6. 327.1
  7. 10.61
  8. 37730
  9. 0.891
  10. 26570
  11. 1449
  12. 2.582
  13. 3.736
  14. 0.02699
  15. 247600
  16. 12610
  17. 8.28
  18. 0.04844
  19. 0.00652
  20. 6.02
  21. 383200
  22. 43.46
  23. 3.218
  24. 9.9
  25. 0.777
  26. 0.00261
  27. 15050
  28. 0.0259
  29. 252.1
  30. 0.171
  31. 5560
  32. 3.261
  33. 28400
  34. 419300
  35. 4063
  36. 3.776
  37. 0.3143
  38. 3376
  39. 50100
  40. 471600

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