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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 957 · 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. 1.10.45 × 1000 =
  2. 2.5.79 × 10 =
  3. 3.402.1 ÷ 10 =
  4. 4.39.81 × 10 =
  5. 5.451.7 × 10 =
  6. 6.12.44 × 100 =
  7. 7.10.89 × 100 =
  8. 8.79.9 ÷ 1000 =
  9. 9.458.4 ÷ 10 =
  10. 10.11.11 × 1000 =
  11. 11.487.7 ÷ 10 =
  12. 12.28.75 × 1000 =
  13. 13.26.81 × 100 =
  14. 14.268.1 ÷ 1000 =
  15. 15.38.68 × 10 =
  16. 16.360.2 ÷ 100 =
  17. 17.6.4 ÷ 100 =
  18. 18.4.61 × 10 =
  19. 19.186.1 × 10 =
  20. 20.26.7 × 100 =
  21. 21.21.34 × 100 =
  22. 22.468.9 ÷ 1000 =
  23. 23.8.67 × 10 =
  24. 24.23.85 × 1000 =
  25. 25.344.8 × 10 =
  26. 26.37.52 × 10 =
  27. 27.3.71 × 10 =
  28. 28.251.1 × 10 =
  29. 29.11.82 × 100 =
  30. 30.214.5 ÷ 10 =
  31. 31.8.39 ÷ 1000 =
  32. 32.12.81 ÷ 1000 =
  33. 33.318.9 × 10 =
  34. 34.146.3 ÷ 1000 =
  35. 35.23.56 ÷ 1000 =
  36. 36.28.01 × 10 =
  37. 37.47.09 × 10 =
  38. 38.97.5 ÷ 10 =
  39. 39.31.17 ÷ 1000 =
  40. 40.435.2 × 10 =

Answer key

  1. 10450
  2. 57.9
  3. 40.21
  4. 398.1
  5. 4517
  6. 1244
  7. 1089
  8. 0.0799
  9. 45.84
  10. 11110
  11. 48.77
  12. 28750
  13. 2681
  14. 0.2681
  15. 386.8
  16. 3.602
  17. 0.064
  18. 46.1
  19. 1861
  20. 2670
  21. 2134
  22. 0.4689
  23. 86.7
  24. 23850
  25. 3448
  26. 375.2
  27. 37.1
  28. 2511
  29. 1182
  30. 21.45
  31. 0.00839
  32. 0.01281
  33. 3189
  34. 0.1463
  35. 0.02356
  36. 280.1
  37. 470.9
  38. 9.75
  39. 0.03117
  40. 4352

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