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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 211 · 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. 1.31.13 × 1000 =
  2. 2.35.89 × 1000 =
  3. 3.499.8 × 1000 =
  4. 4.451.1 ÷ 10 =
  5. 5.9.74 × 10 =
  6. 6.324.5 × 100 =
  7. 7.162.7 ÷ 10 =
  8. 8.0.14 × 100 =
  9. 9.399.2 × 1000 =
  10. 10.33.4 × 10 =
  11. 11.2.03 × 100 =
  12. 12.491.8 × 1000 =
  13. 13.16.57 × 10 =
  14. 14.241.6 × 10 =
  15. 15.329.7 × 10 =
  16. 16.217.5 × 1000 =
  17. 17.24.3 × 10 =
  18. 18.1.9 × 1000 =
  19. 19.205.1 × 10 =
  20. 20.164.5 ÷ 1000 =
  21. 21.147.4 ÷ 1000 =
  22. 22.1.29 ÷ 10 =
  23. 23.137.1 × 1000 =
  24. 24.75.1 ÷ 10 =
  25. 25.130.7 ÷ 1000 =
  26. 26.34.63 ÷ 1000 =
  27. 27.294.5 ÷ 100 =
  28. 28.235.5 × 10 =
  29. 29.70.1 × 10 =
  30. 30.474.5 × 1000 =
  31. 31.40.54 × 10 =
  32. 32.31.84 × 10 =
  33. 33.317.9 × 10 =
  34. 34.47.6 × 10 =
  35. 35.469.4 ÷ 10 =
  36. 36.131.8 × 1000 =
  37. 37.182.4 ÷ 10 =
  38. 38.428.1 × 10 =
  39. 39.6.41 × 1000 =
  40. 40.48.19 ÷ 10 =

Answer key

  1. 31130
  2. 35890
  3. 499800
  4. 45.11
  5. 97.4
  6. 32450
  7. 16.27
  8. 14
  9. 399200
  10. 334
  11. 203
  12. 491800
  13. 165.7
  14. 2416
  15. 3297
  16. 217500
  17. 243
  18. 1900
  19. 2051
  20. 0.1645
  21. 0.1474
  22. 0.129
  23. 137100
  24. 7.51
  25. 0.1307
  26. 0.03463
  27. 2.945
  28. 2355
  29. 701
  30. 474500
  31. 405.4
  32. 318.4
  33. 3179
  34. 476
  35. 46.94
  36. 131800
  37. 18.24
  38. 4281
  39. 6410
  40. 4.819

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