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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 911 · 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. 1.28.31 ÷ 100 =
  2. 2.2.71 ÷ 10 =
  3. 3.15.09 ÷ 10 =
  4. 4.21.92 ÷ 10 =
  5. 5.27.51 × 1000 =
  6. 6.104.4 ÷ 100 =
  7. 7.475.3 × 100 =
  8. 8.8.61 × 100 =
  9. 9.362.6 × 1000 =
  10. 10.260.6 × 1000 =
  11. 11.7.02 × 1000 =
  12. 12.24.86 × 10 =
  13. 13.24.31 ÷ 10 =
  14. 14.8.94 × 1000 =
  15. 15.96.9 ÷ 10 =
  16. 16.16.57 × 1000 =
  17. 17.207.8 ÷ 1000 =
  18. 18.43.52 × 10 =
  19. 19.122.8 ÷ 100 =
  20. 20.307.3 × 10 =
  21. 21.157.8 ÷ 100 =
  22. 22.8.92 ÷ 10 =
  23. 23.49.16 × 1000 =
  24. 24.298.8 × 100 =
  25. 25.483.1 × 1000 =
  26. 26.7.38 × 10 =
  27. 27.31.33 × 100 =
  28. 28.48.41 × 1000 =
  29. 29.20.06 × 100 =
  30. 30.439.5 × 10 =
  31. 31.96.4 × 10 =
  32. 32.493.3 ÷ 1000 =
  33. 33.30.38 × 100 =
  34. 34.39.62 ÷ 100 =
  35. 35.2.58 ÷ 10 =
  36. 36.2.66 × 1000 =
  37. 37.43.13 ÷ 100 =
  38. 38.139.8 ÷ 10 =
  39. 39.21.55 × 100 =
  40. 40.117.8 ÷ 1000 =

Answer key

  1. 0.2831
  2. 0.271
  3. 1.509
  4. 2.192
  5. 27510
  6. 1.044
  7. 47530
  8. 861
  9. 362600
  10. 260600
  11. 7020
  12. 248.6
  13. 2.431
  14. 8940
  15. 9.69
  16. 16570
  17. 0.2078
  18. 435.2
  19. 1.228
  20. 3073
  21. 1.578
  22. 0.892
  23. 49160
  24. 29880
  25. 483100
  26. 73.8
  27. 3133
  28. 48410
  29. 2006
  30. 4395
  31. 964
  32. 0.4933
  33. 3038
  34. 0.3962
  35. 0.258
  36. 2660
  37. 0.4313
  38. 13.98
  39. 2155
  40. 0.1178

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