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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 528 · 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. 1.31.21 × 10 =
  2. 2.151.1 × 1000 =
  3. 3.393.1 × 1000 =
  4. 4.16.03 ÷ 1000 =
  5. 5.23.41 ÷ 1000 =
  6. 6.9.08 ÷ 1000 =
  7. 7.366.3 × 100 =
  8. 8.214.9 × 10 =
  9. 9.168.8 × 10 =
  10. 10.42.27 × 1000 =
  11. 11.4.82 × 10 =
  12. 12.36.32 × 10 =
  13. 13.236.3 × 10 =
  14. 14.39.32 ÷ 10 =
  15. 15.6.99 ÷ 10 =
  16. 16.47.42 × 10 =
  17. 17.22.58 ÷ 1000 =
  18. 18.34.18 × 1000 =
  19. 19.252.6 ÷ 10 =
  20. 20.10.64 × 10 =
  21. 21.45.01 × 1000 =
  22. 22.352.5 × 1000 =
  23. 23.8.85 ÷ 1000 =
  24. 24.83.5 ÷ 1000 =
  25. 25.177.1 ÷ 100 =
  26. 26.49.95 × 1000 =
  27. 27.36.27 × 1000 =
  28. 28.267.8 ÷ 10 =
  29. 29.317.9 × 100 =
  30. 30.1.69 × 1000 =
  31. 31.2.41 × 100 =
  32. 32.36.6 × 100 =
  33. 33.0.28 ÷ 100 =
  34. 34.13.62 ÷ 1000 =
  35. 35.191.1 × 1000 =
  36. 36.7.81 ÷ 10 =
  37. 37.17.44 × 10 =
  38. 38.40.34 ÷ 1000 =
  39. 39.12.24 ÷ 10 =
  40. 40.87.5 ÷ 10 =

Answer key

  1. 312.1
  2. 151100
  3. 393100
  4. 0.01603
  5. 0.02341
  6. 0.00908
  7. 36630
  8. 2149
  9. 1688
  10. 42270
  11. 48.2
  12. 363.2
  13. 2363
  14. 3.932
  15. 0.699
  16. 474.2
  17. 0.02258
  18. 34180
  19. 25.26
  20. 106.4
  21. 45010
  22. 352500
  23. 0.00885
  24. 0.0835
  25. 1.771
  26. 49950
  27. 36270
  28. 26.78
  29. 31790
  30. 1690
  31. 241
  32. 3660
  33. 0.0028
  34. 0.01362
  35. 191100
  36. 0.781
  37. 174.4
  38. 0.04034
  39. 1.224
  40. 8.75

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