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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 483 · 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. 1.93.2 ÷ 10 =
  2. 2.14.77 × 1000 =
  3. 3.232.4 ÷ 10 =
  4. 4.20.46 × 1000 =
  5. 5.4.25 ÷ 10 =
  6. 6.0.51 ÷ 100 =
  7. 7.18.87 × 10 =
  8. 8.25.39 ÷ 1000 =
  9. 9.33.93 ÷ 1000 =
  10. 10.9.92 × 1000 =
  11. 11.3.82 ÷ 10 =
  12. 12.135.6 ÷ 10 =
  13. 13.53.8 ÷ 100 =
  14. 14.32.66 × 1000 =
  15. 15.34.04 ÷ 10 =
  16. 16.68.8 × 10 =
  17. 17.403.6 × 100 =
  18. 18.435.8 ÷ 10 =
  19. 19.22.59 ÷ 10 =
  20. 20.336.6 × 100 =
  21. 21.104.7 × 100 =
  22. 22.19.55 × 100 =
  23. 23.47.12 ÷ 100 =
  24. 24.42.69 ÷ 100 =
  25. 25.365.2 ÷ 100 =
  26. 26.359.1 ÷ 1000 =
  27. 27.105.1 ÷ 1000 =
  28. 28.110.4 ÷ 100 =
  29. 29.118.6 × 1000 =
  30. 30.385.1 × 100 =
  31. 31.375.3 ÷ 100 =
  32. 32.20.7 ÷ 1000 =
  33. 33.137.9 × 100 =
  34. 34.2.13 × 1000 =
  35. 35.12.58 × 100 =
  36. 36.0.29 ÷ 10 =
  37. 37.48.59 × 1000 =
  38. 38.17.44 × 1000 =
  39. 39.411.7 ÷ 1000 =
  40. 40.38.71 × 100 =

Answer key

  1. 9.32
  2. 14770
  3. 23.24
  4. 20460
  5. 0.425
  6. 0.0051
  7. 188.7
  8. 0.02539
  9. 0.03393
  10. 9920
  11. 0.382
  12. 13.56
  13. 0.538
  14. 32660
  15. 3.404
  16. 688
  17. 40360
  18. 43.58
  19. 2.259
  20. 33660
  21. 10470
  22. 1955
  23. 0.4712
  24. 0.4269
  25. 3.652
  26. 0.3591
  27. 0.1051
  28. 1.104
  29. 118600
  30. 38510
  31. 3.753
  32. 0.0207
  33. 13790
  34. 2130
  35. 1258
  36. 0.029
  37. 48590
  38. 17440
  39. 0.4117
  40. 3871

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