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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 627 · 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. 1.6.47 × 10 =
  2. 2.47.59 × 1000 =
  3. 3.5.5 × 10 =
  4. 4.15.5 × 1000 =
  5. 5.24.11 × 1000 =
  6. 6.380.9 ÷ 10 =
  7. 7.13.42 ÷ 100 =
  8. 8.47.63 ÷ 1000 =
  9. 9.335.1 × 1000 =
  10. 10.427.1 ÷ 10 =
  11. 11.33.24 ÷ 100 =
  12. 12.26.14 × 1000 =
  13. 13.169.2 × 100 =
  14. 14.25.28 ÷ 10 =
  15. 15.359.6 ÷ 100 =
  16. 16.37.2 ÷ 10 =
  17. 17.422.8 × 10 =
  18. 18.442.1 ÷ 100 =
  19. 19.30.16 × 100 =
  20. 20.45.81 × 100 =
  21. 21.31.04 × 10 =
  22. 22.318.4 × 1000 =
  23. 23.13.11 ÷ 1000 =
  24. 24.49.43 × 10 =
  25. 25.4.62 × 10 =
  26. 26.49.29 × 1000 =
  27. 27.45.88 ÷ 10 =
  28. 28.22.71 × 1000 =
  29. 29.2.26 ÷ 1000 =
  30. 30.18.55 ÷ 100 =
  31. 31.57.6 × 100 =
  32. 32.402.4 × 10 =
  33. 33.47.02 × 10 =
  34. 34.298.4 × 10 =
  35. 35.191.4 × 10 =
  36. 36.24.45 ÷ 100 =
  37. 37.453.7 ÷ 1000 =
  38. 38.341.1 × 100 =
  39. 39.121.9 × 10 =
  40. 40.9.48 ÷ 10 =

Answer key

  1. 64.7
  2. 47590
  3. 55
  4. 15500
  5. 24110
  6. 38.09
  7. 0.1342
  8. 0.04763
  9. 335100
  10. 42.71
  11. 0.3324
  12. 26140
  13. 16920
  14. 2.528
  15. 3.596
  16. 3.72
  17. 4228
  18. 4.421
  19. 3016
  20. 4581
  21. 310.4
  22. 318400
  23. 0.01311
  24. 494.3
  25. 46.2
  26. 49290
  27. 4.588
  28. 22710
  29. 0.00226
  30. 0.1855
  31. 5760
  32. 4024
  33. 470.2
  34. 2984
  35. 1914
  36. 0.2445
  37. 0.4537
  38. 34110
  39. 1219
  40. 0.948

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