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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 592 · 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. 1.344.2 ÷ 10 =
  2. 2.205.1 × 100 =
  3. 3.40.11 × 1000 =
  4. 4.12.97 ÷ 10 =
  5. 5.127.7 × 1000 =
  6. 6.121.4 ÷ 100 =
  7. 7.14.4 × 10 =
  8. 8.311.2 ÷ 10 =
  9. 9.22.73 × 1000 =
  10. 10.113.7 × 10 =
  11. 11.18.71 × 100 =
  12. 12.31.38 × 10 =
  13. 13.52.6 ÷ 100 =
  14. 14.66.4 × 10 =
  15. 15.135.8 ÷ 1000 =
  16. 16.398.7 × 100 =
  17. 17.360.7 ÷ 1000 =
  18. 18.147.3 ÷ 100 =
  19. 19.335.2 ÷ 1000 =
  20. 20.453.7 × 10 =
  21. 21.33.08 × 100 =
  22. 22.258.1 × 100 =
  23. 23.128.5 ÷ 1000 =
  24. 24.35.58 ÷ 10 =
  25. 25.95.1 × 10 =
  26. 26.40.12 × 1000 =
  27. 27.39.11 ÷ 10 =
  28. 28.27.25 × 100 =
  29. 29.71.5 ÷ 1000 =
  30. 30.92.4 × 100 =
  31. 31.17.8 ÷ 100 =
  32. 32.102.7 ÷ 100 =
  33. 33.386.4 ÷ 10 =
  34. 34.13.69 × 1000 =
  35. 35.22.62 ÷ 100 =
  36. 36.11.37 × 1000 =
  37. 37.45.72 × 100 =
  38. 38.30.79 ÷ 10 =
  39. 39.43.81 × 1000 =
  40. 40.9.66 × 1000 =

Answer key

  1. 34.42
  2. 20510
  3. 40110
  4. 1.297
  5. 127700
  6. 1.214
  7. 144
  8. 31.12
  9. 22730
  10. 1137
  11. 1871
  12. 313.8
  13. 0.526
  14. 664
  15. 0.1358
  16. 39870
  17. 0.3607
  18. 1.473
  19. 0.3352
  20. 4537
  21. 3308
  22. 25810
  23. 0.1285
  24. 3.558
  25. 951
  26. 40120
  27. 3.911
  28. 2725
  29. 0.0715
  30. 9240
  31. 0.178
  32. 1.027
  33. 38.64
  34. 13690
  35. 0.2262
  36. 11370
  37. 4572
  38. 3.079
  39. 43810
  40. 9660

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