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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 365 · 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. 1.230.6 × 1000 =
  2. 2.45.14 × 100 =
  3. 3.20.04 × 100 =
  4. 4.91.8 × 100 =
  5. 5.47.51 ÷ 100 =
  6. 6.17.51 ÷ 10 =
  7. 7.17.01 ÷ 10 =
  8. 8.302.8 ÷ 100 =
  9. 9.13.4 × 1000 =
  10. 10.224.2 × 10 =
  11. 11.97.2 × 100 =
  12. 12.372.1 × 100 =
  13. 13.231.5 × 100 =
  14. 14.335.1 × 1000 =
  15. 15.70.2 ÷ 1000 =
  16. 16.22.79 ÷ 10 =
  17. 17.3.01 × 10 =
  18. 18.30.19 × 10 =
  19. 19.6.95 × 100 =
  20. 20.219.7 ÷ 1000 =
  21. 21.294.4 × 10 =
  22. 22.46.6 ÷ 100 =
  23. 23.8.95 × 10 =
  24. 24.5.91 ÷ 100 =
  25. 25.59.4 × 10 =
  26. 26.9.29 × 1000 =
  27. 27.30.72 × 1000 =
  28. 28.54.3 ÷ 10 =
  29. 29.21.75 ÷ 100 =
  30. 30.49.19 × 1000 =
  31. 31.2.72 ÷ 10 =
  32. 32.11.04 ÷ 1000 =
  33. 33.43.82 × 1000 =
  34. 34.454.5 ÷ 100 =
  35. 35.232.3 ÷ 100 =
  36. 36.289.7 ÷ 100 =
  37. 37.8.83 × 10 =
  38. 38.16.89 × 10 =
  39. 39.22.49 ÷ 100 =
  40. 40.97.2 ÷ 100 =

Answer key

  1. 230600
  2. 4514
  3. 2004
  4. 9180
  5. 0.4751
  6. 1.751
  7. 1.701
  8. 3.028
  9. 13400
  10. 2242
  11. 9720
  12. 37210
  13. 23150
  14. 335100
  15. 0.0702
  16. 2.279
  17. 30.1
  18. 301.9
  19. 695
  20. 0.2197
  21. 2944
  22. 0.466
  23. 89.5
  24. 0.0591
  25. 594
  26. 9290
  27. 30720
  28. 5.43
  29. 0.2175
  30. 49190
  31. 0.272
  32. 0.01104
  33. 43820
  34. 4.545
  35. 2.323
  36. 2.897
  37. 88.3
  38. 168.9
  39. 0.2249
  40. 0.972

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