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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 303 · 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. 1.362.1 ÷ 10 =
  2. 2.4.65 ÷ 100 =
  3. 3.49.7 × 100 =
  4. 4.50.9 ÷ 10 =
  5. 5.150.7 ÷ 1000 =
  6. 6.195.1 ÷ 1000 =
  7. 7.49.54 × 1000 =
  8. 8.6.61 ÷ 1000 =
  9. 9.111.1 ÷ 100 =
  10. 10.32.24 × 1000 =
  11. 11.31.79 × 1000 =
  12. 12.174.1 × 10 =
  13. 13.91.1 × 1000 =
  14. 14.22.43 ÷ 10 =
  15. 15.9.71 × 10 =
  16. 16.370.5 ÷ 1000 =
  17. 17.37.11 × 100 =
  18. 18.41.59 ÷ 1000 =
  19. 19.39.95 × 1000 =
  20. 20.26.27 ÷ 1000 =
  21. 21.28.41 ÷ 10 =
  22. 22.497.1 × 10 =
  23. 23.6.67 ÷ 10 =
  24. 24.204.4 × 10 =
  25. 25.9.97 ÷ 1000 =
  26. 26.19.36 × 100 =
  27. 27.35.75 ÷ 1000 =
  28. 28.39.14 × 10 =
  29. 29.264.1 × 1000 =
  30. 30.65.6 × 100 =
  31. 31.11.41 × 100 =
  32. 32.15.22 × 10 =
  33. 33.80.9 ÷ 1000 =
  34. 34.45.2 × 1000 =
  35. 35.23.47 × 100 =
  36. 36.125.1 × 10 =
  37. 37.2.19 ÷ 10 =
  38. 38.46.82 × 1000 =
  39. 39.451.3 ÷ 1000 =
  40. 40.45.25 × 1000 =

Answer key

  1. 36.21
  2. 0.0465
  3. 4970
  4. 5.09
  5. 0.1507
  6. 0.1951
  7. 49540
  8. 0.00661
  9. 1.111
  10. 32240
  11. 31790
  12. 1741
  13. 91100
  14. 2.243
  15. 97.1
  16. 0.3705
  17. 3711
  18. 0.04159
  19. 39950
  20. 0.02627
  21. 2.841
  22. 4971
  23. 0.667
  24. 2044
  25. 0.00997
  26. 1936
  27. 0.03575
  28. 391.4
  29. 264100
  30. 6560
  31. 1141
  32. 152.2
  33. 0.0809
  34. 45200
  35. 2347
  36. 1251
  37. 0.219
  38. 46820
  39. 0.4513
  40. 45250

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