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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 224 · 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. 1.464.2 ÷ 100 =
  2. 2.29.46 × 10 =
  3. 3.8.35 × 1000 =
  4. 4.473.1 × 10 =
  5. 5.22.11 × 100 =
  6. 6.4.64 ÷ 10 =
  7. 7.43.32 × 100 =
  8. 8.30.49 × 10 =
  9. 9.271.9 ÷ 1000 =
  10. 10.193.1 × 1000 =
  11. 11.475.1 × 100 =
  12. 12.315.1 × 100 =
  13. 13.32.07 × 1000 =
  14. 14.28.11 ÷ 1000 =
  15. 15.170.5 ÷ 100 =
  16. 16.4.31 ÷ 100 =
  17. 17.10.43 × 100 =
  18. 18.11.56 × 1000 =
  19. 19.4.48 ÷ 100 =
  20. 20.160.3 ÷ 1000 =
  21. 21.28.89 ÷ 100 =
  22. 22.485.1 × 1000 =
  23. 23.484.7 × 1000 =
  24. 24.153.2 × 10 =
  25. 25.4.86 × 10 =
  26. 26.137.9 × 1000 =
  27. 27.28.61 × 1000 =
  28. 28.49.09 × 100 =
  29. 29.27.12 × 100 =
  30. 30.357.6 × 100 =
  31. 31.32.56 ÷ 10 =
  32. 32.13.41 ÷ 100 =
  33. 33.20.41 ÷ 100 =
  34. 34.31.6 × 100 =
  35. 35.44.52 ÷ 1000 =
  36. 36.107.5 ÷ 100 =
  37. 37.35.5 ÷ 1000 =
  38. 38.427.6 × 100 =
  39. 39.44.01 × 100 =
  40. 40.367.8 × 100 =

Answer key

  1. 4.642
  2. 294.6
  3. 8350
  4. 4731
  5. 2211
  6. 0.464
  7. 4332
  8. 304.9
  9. 0.2719
  10. 193100
  11. 47510
  12. 31510
  13. 32070
  14. 0.02811
  15. 1.705
  16. 0.0431
  17. 1043
  18. 11560
  19. 0.0448
  20. 0.1603
  21. 0.2889
  22. 485100
  23. 484700
  24. 1532
  25. 48.6
  26. 137900
  27. 28610
  28. 4909
  29. 2712
  30. 35760
  31. 3.256
  32. 0.1341
  33. 0.2041
  34. 3160
  35. 0.04452
  36. 1.075
  37. 0.0355
  38. 42760
  39. 4401
  40. 36780

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