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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 107 · 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. 1.318.5 ÷ 1000 =
  2. 2.149.8 × 10 =
  3. 3.40.61 × 100 =
  4. 4.68.3 ÷ 10 =
  5. 5.109.8 ÷ 10 =
  6. 6.2.29 × 1000 =
  7. 7.26.09 ÷ 10 =
  8. 8.32.43 × 10 =
  9. 9.107.2 ÷ 1000 =
  10. 10.20.76 × 100 =
  11. 11.12.46 ÷ 1000 =
  12. 12.2.44 × 10 =
  13. 13.17.22 ÷ 10 =
  14. 14.460.8 ÷ 1000 =
  15. 15.116.4 × 100 =
  16. 16.494.6 × 1000 =
  17. 17.133.8 ÷ 1000 =
  18. 18.28.64 × 10 =
  19. 19.87.9 ÷ 1000 =
  20. 20.45.51 ÷ 10 =
  21. 21.23.94 ÷ 10 =
  22. 22.259.1 ÷ 100 =
  23. 23.75.8 × 100 =
  24. 24.431.5 × 10 =
  25. 25.39.66 ÷ 10 =
  26. 26.461.3 ÷ 10 =
  27. 27.322.8 ÷ 100 =
  28. 28.55.2 ÷ 10 =
  29. 29.44.83 × 1000 =
  30. 30.294.8 × 1000 =
  31. 31.5.86 × 10 =
  32. 32.1.1 ÷ 10 =
  33. 33.24.11 × 100 =
  34. 34.49.36 ÷ 1000 =
  35. 35.96.2 ÷ 1000 =
  36. 36.44.87 × 10 =
  37. 37.40.51 ÷ 1000 =
  38. 38.263.3 ÷ 1000 =
  39. 39.4.96 ÷ 1000 =
  40. 40.21.26 ÷ 100 =

Answer key

  1. 0.3185
  2. 1498
  3. 4061
  4. 6.83
  5. 10.98
  6. 2290
  7. 2.609
  8. 324.3
  9. 0.1072
  10. 2076
  11. 0.01246
  12. 24.4
  13. 1.722
  14. 0.4608
  15. 11640
  16. 494600
  17. 0.1338
  18. 286.4
  19. 0.0879
  20. 4.551
  21. 2.394
  22. 2.591
  23. 7580
  24. 4315
  25. 3.966
  26. 46.13
  27. 3.228
  28. 5.52
  29. 44830
  30. 294800
  31. 58.6
  32. 0.11
  33. 2411
  34. 0.04936
  35. 0.0962
  36. 448.7
  37. 0.04051
  38. 0.2633
  39. 0.00496
  40. 0.2126

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