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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 915 · 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. 1.416.8 ÷ 10 =
  2. 2.4.31 × 10 =
  3. 3.7.59 ÷ 100 =
  4. 4.423.5 ÷ 10 =
  5. 5.46.07 ÷ 100 =
  6. 6.6.78 × 1000 =
  7. 7.7.41 × 100 =
  8. 8.320.5 ÷ 10 =
  9. 9.23.09 × 10 =
  10. 10.49.33 × 100 =
  11. 11.33.84 × 100 =
  12. 12.8.96 × 100 =
  13. 13.184.8 × 1000 =
  14. 14.33.06 ÷ 10 =
  15. 15.30.3 × 100 =
  16. 16.17.92 × 10 =
  17. 17.124.8 × 1000 =
  18. 18.12.77 ÷ 100 =
  19. 19.301.4 × 100 =
  20. 20.453.5 ÷ 1000 =
  21. 21.19.53 ÷ 1000 =
  22. 22.202.6 × 10 =
  23. 23.43.22 × 10 =
  24. 24.16.33 × 10 =
  25. 25.227.8 ÷ 100 =
  26. 26.11.21 × 10 =
  27. 27.42.57 ÷ 1000 =
  28. 28.53.8 × 100 =
  29. 29.271.8 × 10 =
  30. 30.46.4 ÷ 1000 =
  31. 31.21.73 × 1000 =
  32. 32.19.71 × 1000 =
  33. 33.99.1 × 1000 =
  34. 34.464.1 ÷ 10 =
  35. 35.399.4 ÷ 10 =
  36. 36.132.4 ÷ 1000 =
  37. 37.19.76 ÷ 100 =
  38. 38.24.86 ÷ 1000 =
  39. 39.18.05 × 10 =
  40. 40.42.53 ÷ 10 =

Answer key

  1. 41.68
  2. 43.1
  3. 0.0759
  4. 42.35
  5. 0.4607
  6. 6780
  7. 741
  8. 32.05
  9. 230.9
  10. 4933
  11. 3384
  12. 896
  13. 184800
  14. 3.306
  15. 3030
  16. 179.2
  17. 124800
  18. 0.1277
  19. 30140
  20. 0.4535
  21. 0.01953
  22. 2026
  23. 432.2
  24. 163.3
  25. 2.278
  26. 112.1
  27. 0.04257
  28. 5380
  29. 2718
  30. 0.0464
  31. 21730
  32. 19710
  33. 99100
  34. 46.41
  35. 39.94
  36. 0.1324
  37. 0.1976
  38. 0.02486
  39. 180.5
  40. 4.253

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