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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 432 · 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. 1.42.11 × 1000 =
  2. 2.259.1 ÷ 10 =
  3. 3.58.1 ÷ 10 =
  4. 4.379.1 × 100 =
  5. 5.38.66 × 1000 =
  6. 6.8.71 × 100 =
  7. 7.7.38 × 100 =
  8. 8.16.2 ÷ 10 =
  9. 9.3.41 × 1000 =
  10. 10.164.5 × 1000 =
  11. 11.367.3 ÷ 100 =
  12. 12.150.4 ÷ 100 =
  13. 13.10.6 × 100 =
  14. 14.239.5 × 10 =
  15. 15.126.7 × 10 =
  16. 16.46.74 × 100 =
  17. 17.3.98 × 1000 =
  18. 18.442.3 × 100 =
  19. 19.34.74 × 100 =
  20. 20.4.96 ÷ 100 =
  21. 21.110.5 × 1000 =
  22. 22.18.89 ÷ 10 =
  23. 23.37.75 ÷ 1000 =
  24. 24.13.82 × 10 =
  25. 25.4.87 × 1000 =
  26. 26.241.1 × 100 =
  27. 27.38.7 × 1000 =
  28. 28.395.7 ÷ 10 =
  29. 29.123.3 × 10 =
  30. 30.1.8 ÷ 100 =
  31. 31.11.54 × 10 =
  32. 32.234.2 × 10 =
  33. 33.138.2 ÷ 1000 =
  34. 34.15.22 ÷ 10 =
  35. 35.152.4 × 100 =
  36. 36.22.1 ÷ 100 =
  37. 37.359.6 × 10 =
  38. 38.37.01 ÷ 100 =
  39. 39.44.63 × 10 =
  40. 40.293.9 ÷ 10 =

Answer key

  1. 42110
  2. 25.91
  3. 5.81
  4. 37910
  5. 38660
  6. 871
  7. 738
  8. 1.62
  9. 3410
  10. 164500
  11. 3.673
  12. 1.504
  13. 1060
  14. 2395
  15. 1267
  16. 4674
  17. 3980
  18. 44230
  19. 3474
  20. 0.0496
  21. 110500
  22. 1.889
  23. 0.03775
  24. 138.2
  25. 4870
  26. 24110
  27. 38700
  28. 39.57
  29. 1233
  30. 0.018
  31. 115.4
  32. 2342
  33. 0.1382
  34. 1.522
  35. 15240
  36. 0.221
  37. 3596
  38. 0.3701
  39. 446.3
  40. 29.39

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