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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 638 · 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. 1.13.75 × 10 =
  2. 2.392.6 × 10 =
  3. 3.10.83 ÷ 100 =
  4. 4.7.25 × 10 =
  5. 5.7.45 ÷ 10 =
  6. 6.44.11 ÷ 1000 =
  7. 7.35.7 ÷ 1000 =
  8. 8.117.4 × 100 =
  9. 9.12.1 × 10 =
  10. 10.133.3 ÷ 10 =
  11. 11.11.28 ÷ 1000 =
  12. 12.239.9 × 100 =
  13. 13.184.1 × 100 =
  14. 14.4.09 ÷ 1000 =
  15. 15.408.1 × 10 =
  16. 16.13.57 × 10 =
  17. 17.316.7 ÷ 10 =
  18. 18.49.63 ÷ 100 =
  19. 19.48.32 ÷ 10 =
  20. 20.17.79 × 10 =
  21. 21.472.9 ÷ 10 =
  22. 22.460.1 × 100 =
  23. 23.26.89 × 100 =
  24. 24.1.84 ÷ 10 =
  25. 25.34.52 ÷ 1000 =
  26. 26.276.9 ÷ 1000 =
  27. 27.7.45 ÷ 100 =
  28. 28.48.07 ÷ 1000 =
  29. 29.56.5 × 1000 =
  30. 30.0.55 ÷ 100 =
  31. 31.206.1 ÷ 10 =
  32. 32.310.1 × 1000 =
  33. 33.82.4 × 10 =
  34. 34.48.91 ÷ 100 =
  35. 35.47.28 × 10 =
  36. 36.46.6 × 100 =
  37. 37.281.3 ÷ 10 =
  38. 38.177.1 × 100 =
  39. 39.10.65 ÷ 100 =
  40. 40.38.65 ÷ 10 =

Answer key

  1. 137.5
  2. 3926
  3. 0.1083
  4. 72.5
  5. 0.745
  6. 0.04411
  7. 0.0357
  8. 11740
  9. 121
  10. 13.33
  11. 0.01128
  12. 23990
  13. 18410
  14. 0.00409
  15. 4081
  16. 135.7
  17. 31.67
  18. 0.4963
  19. 4.832
  20. 177.9
  21. 47.29
  22. 46010
  23. 2689
  24. 0.184
  25. 0.03452
  26. 0.2769
  27. 0.0745
  28. 0.04807
  29. 56500
  30. 0.0055
  31. 20.61
  32. 310100
  33. 824
  34. 0.4891
  35. 472.8
  36. 4660
  37. 28.13
  38. 17710
  39. 0.1065
  40. 3.865

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