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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 429 · 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. 1.198.4 × 1000 =
  2. 2.451.6 ÷ 100 =
  3. 3.384.8 × 1000 =
  4. 4.307.7 ÷ 10 =
  5. 5.399.8 × 100 =
  6. 6.111.1 × 10 =
  7. 7.35.49 ÷ 1000 =
  8. 8.41.44 × 100 =
  9. 9.44.05 × 100 =
  10. 10.105.8 ÷ 10 =
  11. 11.23.56 ÷ 1000 =
  12. 12.194.3 ÷ 100 =
  13. 13.19.1 ÷ 1000 =
  14. 14.4.21 ÷ 100 =
  15. 15.37.71 × 100 =
  16. 16.452.6 × 100 =
  17. 17.15.69 × 10 =
  18. 18.331.9 × 100 =
  19. 19.175.4 ÷ 100 =
  20. 20.331.9 × 10 =
  21. 21.2.59 × 100 =
  22. 22.189.7 × 100 =
  23. 23.10.4 ÷ 10 =
  24. 24.393.4 × 10 =
  25. 25.9.9 ÷ 1000 =
  26. 26.9.63 × 1000 =
  27. 27.497.7 ÷ 100 =
  28. 28.6.39 × 1000 =
  29. 29.20.31 × 100 =
  30. 30.11.09 × 1000 =
  31. 31.47.59 ÷ 10 =
  32. 32.442.3 × 10 =
  33. 33.310.5 ÷ 10 =
  34. 34.12.9 ÷ 100 =
  35. 35.19.09 × 10 =
  36. 36.277.7 × 100 =
  37. 37.75.4 ÷ 1000 =
  38. 38.19.27 ÷ 10 =
  39. 39.9.55 ÷ 10 =
  40. 40.47.8 × 100 =

Answer key

  1. 198400
  2. 4.516
  3. 384800
  4. 30.77
  5. 39980
  6. 1111
  7. 0.03549
  8. 4144
  9. 4405
  10. 10.58
  11. 0.02356
  12. 1.943
  13. 0.0191
  14. 0.0421
  15. 3771
  16. 45260
  17. 156.9
  18. 33190
  19. 1.754
  20. 3319
  21. 259
  22. 18970
  23. 1.04
  24. 3934
  25. 0.0099
  26. 9630
  27. 4.977
  28. 6390
  29. 2031
  30. 11090
  31. 4.759
  32. 4423
  33. 31.05
  34. 0.129
  35. 190.9
  36. 27770
  37. 0.0754
  38. 1.927
  39. 0.955
  40. 4780

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