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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 427 · 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. 1.455.3 ÷ 10 =
  2. 2.463.8 × 1000 =
  3. 3.41.46 ÷ 100 =
  4. 4.215.1 ÷ 1000 =
  5. 5.18.91 × 10 =
  6. 6.270.1 × 100 =
  7. 7.32.21 ÷ 10 =
  8. 8.24.23 ÷ 10 =
  9. 9.82.5 ÷ 100 =
  10. 10.13.1 ÷ 10 =
  11. 11.22.65 ÷ 1000 =
  12. 12.364.2 ÷ 10 =
  13. 13.45.71 × 1000 =
  14. 14.218.4 ÷ 100 =
  15. 15.142.6 ÷ 100 =
  16. 16.33.59 × 10 =
  17. 17.8.3 × 1000 =
  18. 18.60.4 ÷ 100 =
  19. 19.339.5 ÷ 10 =
  20. 20.135.2 × 10 =
  21. 21.7.68 × 10 =
  22. 22.165.8 × 1000 =
  23. 23.290.1 × 1000 =
  24. 24.49.42 × 10 =
  25. 25.28.41 ÷ 1000 =
  26. 26.44.84 ÷ 10 =
  27. 27.32.88 × 100 =
  28. 28.153.6 ÷ 10 =
  29. 29.3.68 ÷ 10 =
  30. 30.43.99 ÷ 1000 =
  31. 31.18.58 ÷ 10 =
  32. 32.126.2 × 10 =
  33. 33.0.97 ÷ 100 =
  34. 34.12.5 ÷ 10 =
  35. 35.24.82 ÷ 1000 =
  36. 36.340.6 × 100 =
  37. 37.196.2 ÷ 1000 =
  38. 38.19.37 × 10 =
  39. 39.465.8 ÷ 1000 =
  40. 40.499.1 × 10 =

Answer key

  1. 45.53
  2. 463800
  3. 0.4146
  4. 0.2151
  5. 189.1
  6. 27010
  7. 3.221
  8. 2.423
  9. 0.825
  10. 1.31
  11. 0.02265
  12. 36.42
  13. 45710
  14. 2.184
  15. 1.426
  16. 335.9
  17. 8300
  18. 0.604
  19. 33.95
  20. 1352
  21. 76.8
  22. 165800
  23. 290100
  24. 494.2
  25. 0.02841
  26. 4.484
  27. 3288
  28. 15.36
  29. 0.368
  30. 0.04399
  31. 1.858
  32. 1262
  33. 0.0097
  34. 1.25
  35. 0.02482
  36. 34060
  37. 0.1962
  38. 193.7
  39. 0.4658
  40. 4991

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