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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 114 · 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. 1.30.01 × 100 =
  2. 2.29.87 × 100 =
  3. 3.335.6 × 10 =
  4. 4.290.1 × 1000 =
  5. 5.472.7 × 10 =
  6. 6.120.6 ÷ 1000 =
  7. 7.117.5 ÷ 1000 =
  8. 8.396.1 × 100 =
  9. 9.9.1 ÷ 1000 =
  10. 10.409.3 × 100 =
  11. 11.170.9 ÷ 100 =
  12. 12.82.1 ÷ 1000 =
  13. 13.11.77 × 10 =
  14. 14.330.2 ÷ 10 =
  15. 15.483.4 × 1000 =
  16. 16.28.07 × 10 =
  17. 17.25.96 × 10 =
  18. 18.0.94 × 1000 =
  19. 19.494.7 ÷ 100 =
  20. 20.232.8 × 10 =
  21. 21.344.4 × 10 =
  22. 22.7.71 × 100 =
  23. 23.468.1 ÷ 10 =
  24. 24.27.48 × 10 =
  25. 25.13.03 × 10 =
  26. 26.28.91 ÷ 1000 =
  27. 27.480.2 ÷ 100 =
  28. 28.24.91 × 10 =
  29. 29.1.08 ÷ 10 =
  30. 30.10.96 × 100 =
  31. 31.31.67 ÷ 1000 =
  32. 32.468.7 × 10 =
  33. 33.35.1 ÷ 10 =
  34. 34.10.07 × 1000 =
  35. 35.369.3 ÷ 1000 =
  36. 36.31.05 ÷ 100 =
  37. 37.264.9 × 1000 =
  38. 38.13.63 × 10 =
  39. 39.327.6 × 100 =
  40. 40.9.4 ÷ 1000 =

Answer key

  1. 3001
  2. 2987
  3. 3356
  4. 290100
  5. 4727
  6. 0.1206
  7. 0.1175
  8. 39610
  9. 0.0091
  10. 40930
  11. 1.709
  12. 0.0821
  13. 117.7
  14. 33.02
  15. 483400
  16. 280.7
  17. 259.6
  18. 940
  19. 4.947
  20. 2328
  21. 3444
  22. 771
  23. 46.81
  24. 274.8
  25. 130.3
  26. 0.02891
  27. 4.802
  28. 249.1
  29. 0.108
  30. 1096
  31. 0.03167
  32. 4687
  33. 3.51
  34. 10070
  35. 0.3693
  36. 0.3105
  37. 264900
  38. 136.3
  39. 32760
  40. 0.0094

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