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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 848 · 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. 1.210.3 × 10 =
  2. 2.9.92 ÷ 100 =
  3. 3.27.6 × 100 =
  4. 4.14.05 ÷ 1000 =
  5. 5.409.3 ÷ 100 =
  6. 6.4.82 ÷ 10 =
  7. 7.3.49 × 1000 =
  8. 8.4.2 × 1000 =
  9. 9.403.6 × 1000 =
  10. 10.7.11 × 10 =
  11. 11.99.9 ÷ 1000 =
  12. 12.21.27 ÷ 100 =
  13. 13.48.73 × 10 =
  14. 14.81.9 ÷ 10 =
  15. 15.45.01 × 100 =
  16. 16.43.23 × 1000 =
  17. 17.12.34 ÷ 100 =
  18. 18.110.5 ÷ 10 =
  19. 19.4.74 × 10 =
  20. 20.43.01 × 10 =
  21. 21.14.29 × 1000 =
  22. 22.7.01 ÷ 10 =
  23. 23.174.1 ÷ 10 =
  24. 24.42.55 × 10 =
  25. 25.30.18 ÷ 100 =
  26. 26.21.22 × 1000 =
  27. 27.356.2 × 100 =
  28. 28.380.5 ÷ 100 =
  29. 29.10.8 × 100 =
  30. 30.186.2 × 1000 =
  31. 31.15.45 × 100 =
  32. 32.27.34 × 1000 =
  33. 33.300.5 ÷ 100 =
  34. 34.4.58 ÷ 1000 =
  35. 35.418.1 ÷ 10 =
  36. 36.15.02 ÷ 1000 =
  37. 37.346.4 ÷ 1000 =
  38. 38.263.1 ÷ 100 =
  39. 39.357.7 ÷ 100 =
  40. 40.299.4 × 10 =

Answer key

  1. 2103
  2. 0.0992
  3. 2760
  4. 0.01405
  5. 4.093
  6. 0.482
  7. 3490
  8. 4200
  9. 403600
  10. 71.1
  11. 0.0999
  12. 0.2127
  13. 487.3
  14. 8.19
  15. 4501
  16. 43230
  17. 0.1234
  18. 11.05
  19. 47.4
  20. 430.1
  21. 14290
  22. 0.701
  23. 17.41
  24. 425.5
  25. 0.3018
  26. 21220
  27. 35620
  28. 3.805
  29. 1080
  30. 186200
  31. 1545
  32. 27340
  33. 3.005
  34. 0.00458
  35. 41.81
  36. 0.01502
  37. 0.3464
  38. 2.631
  39. 3.577
  40. 2994

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