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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 825 · 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. 1.5.61 × 10 =
  2. 2.491.4 ÷ 1000 =
  3. 3.162.6 × 10 =
  4. 4.30.38 × 10 =
  5. 5.39.83 ÷ 10 =
  6. 6.112.4 × 100 =
  7. 7.8.68 × 10 =
  8. 8.52.3 ÷ 1000 =
  9. 9.414.3 × 10 =
  10. 10.2.64 ÷ 1000 =
  11. 11.8.73 ÷ 100 =
  12. 12.11.4 ÷ 1000 =
  13. 13.43.79 ÷ 10 =
  14. 14.177.4 × 10 =
  15. 15.248.5 × 1000 =
  16. 16.20.32 ÷ 100 =
  17. 17.32.26 × 10 =
  18. 18.427.5 × 1000 =
  19. 19.48.64 × 1000 =
  20. 20.25.75 × 100 =
  21. 21.40.61 ÷ 10 =
  22. 22.490.6 ÷ 1000 =
  23. 23.25.9 × 1000 =
  24. 24.199.4 ÷ 1000 =
  25. 25.40.44 ÷ 10 =
  26. 26.51.8 ÷ 1000 =
  27. 27.24.5 ÷ 100 =
  28. 28.20.84 × 10 =
  29. 29.220.1 × 1000 =
  30. 30.35.01 ÷ 100 =
  31. 31.144.2 × 100 =
  32. 32.383.1 ÷ 100 =
  33. 33.23.38 ÷ 1000 =
  34. 34.427.8 × 10 =
  35. 35.13.61 ÷ 10 =
  36. 36.177.8 ÷ 100 =
  37. 37.22.7 ÷ 1000 =
  38. 38.6.62 × 1000 =
  39. 39.67.7 ÷ 100 =
  40. 40.214.9 × 100 =

Answer key

  1. 56.1
  2. 0.4914
  3. 1626
  4. 303.8
  5. 3.983
  6. 11240
  7. 86.8
  8. 0.0523
  9. 4143
  10. 0.00264
  11. 0.0873
  12. 0.0114
  13. 4.379
  14. 1774
  15. 248500
  16. 0.2032
  17. 322.6
  18. 427500
  19. 48640
  20. 2575
  21. 4.061
  22. 0.4906
  23. 25900
  24. 0.1994
  25. 4.044
  26. 0.0518
  27. 0.245
  28. 208.4
  29. 220100
  30. 0.3501
  31. 14420
  32. 3.831
  33. 0.02338
  34. 4278
  35. 1.361
  36. 1.778
  37. 0.0227
  38. 6620
  39. 0.677
  40. 21490

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