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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 595 · 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. 1.14.44 × 10 =
  2. 2.6.33 × 10 =
  3. 3.47.93 ÷ 10 =
  4. 4.49.4 ÷ 10 =
  5. 5.11.75 ÷ 1000 =
  6. 6.22.65 × 10 =
  7. 7.52.1 ÷ 10 =
  8. 8.26.27 ÷ 100 =
  9. 9.30.97 ÷ 10 =
  10. 10.417.8 ÷ 10 =
  11. 11.9.21 ÷ 100 =
  12. 12.454.5 ÷ 10 =
  13. 13.8.88 ÷ 100 =
  14. 14.2.41 ÷ 1000 =
  15. 15.360.8 × 100 =
  16. 16.46.02 × 100 =
  17. 17.362.9 ÷ 100 =
  18. 18.7.82 × 1000 =
  19. 19.298.1 ÷ 1000 =
  20. 20.491.1 ÷ 1000 =
  21. 21.89.1 × 100 =
  22. 22.5.32 × 10 =
  23. 23.44.06 ÷ 100 =
  24. 24.6.15 ÷ 1000 =
  25. 25.39.13 ÷ 1000 =
  26. 26.478.5 ÷ 10 =
  27. 27.4.46 × 100 =
  28. 28.48.07 × 10 =
  29. 29.275.3 × 1000 =
  30. 30.43.1 × 100 =
  31. 31.79.1 × 100 =
  32. 32.391.2 ÷ 100 =
  33. 33.108.4 ÷ 1000 =
  34. 34.383.6 × 100 =
  35. 35.7.32 ÷ 100 =
  36. 36.153.1 ÷ 10 =
  37. 37.325.7 × 1000 =
  38. 38.32.36 ÷ 10 =
  39. 39.29.02 × 100 =
  40. 40.446.2 ÷ 1000 =

Answer key

  1. 144.4
  2. 63.3
  3. 4.793
  4. 4.94
  5. 0.01175
  6. 226.5
  7. 5.21
  8. 0.2627
  9. 3.097
  10. 41.78
  11. 0.0921
  12. 45.45
  13. 0.0888
  14. 0.00241
  15. 36080
  16. 4602
  17. 3.629
  18. 7820
  19. 0.2981
  20. 0.4911
  21. 8910
  22. 53.2
  23. 0.4406
  24. 0.00615
  25. 0.03913
  26. 47.85
  27. 446
  28. 480.7
  29. 275300
  30. 4310
  31. 7910
  32. 3.912
  33. 0.1084
  34. 38360
  35. 0.0732
  36. 15.31
  37. 325700
  38. 3.236
  39. 2902
  40. 0.4462

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