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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 604 · 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. 1.49.31 ÷ 10 =
  2. 2.164.1 ÷ 100 =
  3. 3.82.8 ÷ 10 =
  4. 4.48.12 × 10 =
  5. 5.105.5 × 10 =
  6. 6.259.9 ÷ 100 =
  7. 7.290.4 × 10 =
  8. 8.15.56 × 10 =
  9. 9.8.61 × 1000 =
  10. 10.7.52 × 10 =
  11. 11.44.7 ÷ 10 =
  12. 12.34.72 × 100 =
  13. 13.312.6 × 10 =
  14. 14.9.29 × 1000 =
  15. 15.30.32 × 100 =
  16. 16.3.9 ÷ 10 =
  17. 17.76.5 × 100 =
  18. 18.479.3 ÷ 100 =
  19. 19.9.28 × 1000 =
  20. 20.46.16 × 1000 =
  21. 21.45.41 ÷ 100 =
  22. 22.80.1 ÷ 1000 =
  23. 23.9.35 ÷ 10 =
  24. 24.26.08 × 100 =
  25. 25.34.13 ÷ 10 =
  26. 26.341.1 × 10 =
  27. 27.398.2 ÷ 100 =
  28. 28.320.2 × 1000 =
  29. 29.262.3 ÷ 100 =
  30. 30.418.8 × 10 =
  31. 31.366.7 × 10 =
  32. 32.349.2 × 100 =
  33. 33.26.21 ÷ 1000 =
  34. 34.58.2 ÷ 10 =
  35. 35.347.9 × 10 =
  36. 36.45.61 × 10 =
  37. 37.39.05 ÷ 10 =
  38. 38.42.73 × 10 =
  39. 39.297.5 ÷ 100 =
  40. 40.39.18 × 10 =

Answer key

  1. 4.931
  2. 1.641
  3. 8.28
  4. 481.2
  5. 1055
  6. 2.599
  7. 2904
  8. 155.6
  9. 8610
  10. 75.2
  11. 4.47
  12. 3472
  13. 3126
  14. 9290
  15. 3032
  16. 0.39
  17. 7650
  18. 4.793
  19. 9280
  20. 46160
  21. 0.4541
  22. 0.0801
  23. 0.935
  24. 2608
  25. 3.413
  26. 3411
  27. 3.982
  28. 320200
  29. 2.623
  30. 4188
  31. 3667
  32. 34920
  33. 0.02621
  34. 5.82
  35. 3479
  36. 456.1
  37. 3.905
  38. 427.3
  39. 2.975
  40. 391.8

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