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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 207 · 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. 1.282.9 × 1000 =
  2. 2.3.88 × 100 =
  3. 3.30.2 ÷ 100 =
  4. 4.3.75 ÷ 100 =
  5. 5.330.5 × 10 =
  6. 6.23.17 × 100 =
  7. 7.17.05 × 10 =
  8. 8.11.25 × 1000 =
  9. 9.386.3 ÷ 100 =
  10. 10.245.6 × 100 =
  11. 11.182.4 × 10 =
  12. 12.189.7 ÷ 1000 =
  13. 13.151.6 × 10 =
  14. 14.201.6 ÷ 100 =
  15. 15.364.4 × 1000 =
  16. 16.127.1 × 10 =
  17. 17.12.29 ÷ 1000 =
  18. 18.199.3 ÷ 10 =
  19. 19.1.32 ÷ 1000 =
  20. 20.36.21 × 100 =
  21. 21.8.61 ÷ 1000 =
  22. 22.348.5 ÷ 1000 =
  23. 23.49.16 × 100 =
  24. 24.286.8 × 10 =
  25. 25.414.5 × 100 =
  26. 26.374.6 ÷ 10 =
  27. 27.89.8 ÷ 100 =
  28. 28.360.8 ÷ 100 =
  29. 29.193.4 × 10 =
  30. 30.370.2 × 100 =
  31. 31.306.1 × 10 =
  32. 32.135.8 ÷ 10 =
  33. 33.245.8 × 100 =
  34. 34.375.7 × 1000 =
  35. 35.208.3 × 1000 =
  36. 36.2.19 × 100 =
  37. 37.47.52 × 10 =
  38. 38.34.89 ÷ 1000 =
  39. 39.426.3 ÷ 10 =
  40. 40.35.77 × 10 =

Answer key

  1. 282900
  2. 388
  3. 0.302
  4. 0.0375
  5. 3305
  6. 2317
  7. 170.5
  8. 11250
  9. 3.863
  10. 24560
  11. 1824
  12. 0.1897
  13. 1516
  14. 2.016
  15. 364400
  16. 1271
  17. 0.01229
  18. 19.93
  19. 0.00132
  20. 3621
  21. 0.00861
  22. 0.3485
  23. 4916
  24. 2868
  25. 41450
  26. 37.46
  27. 0.898
  28. 3.608
  29. 1934
  30. 37020
  31. 3061
  32. 13.58
  33. 24580
  34. 375700
  35. 208300
  36. 219
  37. 475.2
  38. 0.03489
  39. 42.63
  40. 357.7

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