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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 707 · 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. 1.6.29 × 10 =
  2. 2.8.61 × 100 =
  3. 3.24.51 ÷ 1000 =
  4. 4.4.41 × 10 =
  5. 5.301.4 ÷ 1000 =
  6. 6.428.9 ÷ 100 =
  7. 7.59.5 ÷ 100 =
  8. 8.23.67 ÷ 100 =
  9. 9.127.7 × 10 =
  10. 10.2.4 × 10 =
  11. 11.13.5 × 10 =
  12. 12.359.8 ÷ 10 =
  13. 13.22.96 × 100 =
  14. 14.16.71 ÷ 100 =
  15. 15.31.1 ÷ 1000 =
  16. 16.305.7 × 10 =
  17. 17.133.3 ÷ 10 =
  18. 18.355.9 × 10 =
  19. 19.28.1 ÷ 1000 =
  20. 20.136.6 × 1000 =
  21. 21.41.61 ÷ 10 =
  22. 22.11.29 ÷ 1000 =
  23. 23.481.6 ÷ 1000 =
  24. 24.39.33 ÷ 100 =
  25. 25.29.41 ÷ 10 =
  26. 26.176.3 × 10 =
  27. 27.333.3 × 10 =
  28. 28.165.6 ÷ 100 =
  29. 29.2.41 × 100 =
  30. 30.14.79 ÷ 100 =
  31. 31.65.3 × 1000 =
  32. 32.320.3 × 100 =
  33. 33.113.4 ÷ 10 =
  34. 34.37.37 ÷ 10 =
  35. 35.32.25 × 10 =
  36. 36.23.25 ÷ 100 =
  37. 37.319.9 ÷ 100 =
  38. 38.38.1 ÷ 100 =
  39. 39.37.7 ÷ 10 =
  40. 40.250.1 × 100 =

Answer key

  1. 62.9
  2. 861
  3. 0.02451
  4. 44.1
  5. 0.3014
  6. 4.289
  7. 0.595
  8. 0.2367
  9. 1277
  10. 24
  11. 135
  12. 35.98
  13. 2296
  14. 0.1671
  15. 0.0311
  16. 3057
  17. 13.33
  18. 3559
  19. 0.0281
  20. 136600
  21. 4.161
  22. 0.01129
  23. 0.4816
  24. 0.3933
  25. 2.941
  26. 1763
  27. 3333
  28. 1.656
  29. 241
  30. 0.1479
  31. 65300
  32. 32030
  33. 11.34
  34. 3.737
  35. 322.5
  36. 0.2325
  37. 3.199
  38. 0.381
  39. 3.77
  40. 25010

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