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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 971 · 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. 1.155.5 × 100 =
  2. 2.22.2 ÷ 1000 =
  3. 3.27.62 × 10 =
  4. 4.8.74 × 1000 =
  5. 5.31.84 × 10 =
  6. 6.20.18 × 100 =
  7. 7.86.1 × 1000 =
  8. 8.217.1 × 10 =
  9. 9.43.97 × 1000 =
  10. 10.244.1 × 100 =
  11. 11.5.79 ÷ 10 =
  12. 12.31.66 ÷ 1000 =
  13. 13.10.03 ÷ 10 =
  14. 14.106.7 × 100 =
  15. 15.23.83 × 1000 =
  16. 16.46.63 × 1000 =
  17. 17.202.8 × 100 =
  18. 18.41.01 × 100 =
  19. 19.2.71 ÷ 10 =
  20. 20.8.74 ÷ 100 =
  21. 21.311.1 ÷ 1000 =
  22. 22.10.31 × 100 =
  23. 23.221.3 ÷ 10 =
  24. 24.415.1 ÷ 100 =
  25. 25.45.51 × 10 =
  26. 26.39.04 × 10 =
  27. 27.244.8 × 10 =
  28. 28.77.7 ÷ 1000 =
  29. 29.470.8 ÷ 1000 =
  30. 30.110.2 × 10 =
  31. 31.10.33 ÷ 100 =
  32. 32.77.7 × 1000 =
  33. 33.31.8 ÷ 10 =
  34. 34.228.1 ÷ 1000 =
  35. 35.19.9 ÷ 1000 =
  36. 36.26.75 ÷ 10 =
  37. 37.467.9 ÷ 1000 =
  38. 38.23.03 ÷ 10 =
  39. 39.33.81 × 1000 =
  40. 40.2.4 ÷ 1000 =

Answer key

  1. 15550
  2. 0.0222
  3. 276.2
  4. 8740
  5. 318.4
  6. 2018
  7. 86100
  8. 2171
  9. 43970
  10. 24410
  11. 0.579
  12. 0.03166
  13. 1.003
  14. 10670
  15. 23830
  16. 46630
  17. 20280
  18. 4101
  19. 0.271
  20. 0.0874
  21. 0.3111
  22. 1031
  23. 22.13
  24. 4.151
  25. 455.1
  26. 390.4
  27. 2448
  28. 0.0777
  29. 0.4708
  30. 1102
  31. 0.1033
  32. 77700
  33. 3.18
  34. 0.2281
  35. 0.0199
  36. 2.675
  37. 0.4679
  38. 2.303
  39. 33810
  40. 0.0024

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