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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 662 · 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. 1.395.1 ÷ 10 =
  2. 2.44.51 ÷ 10 =
  3. 3.14.45 ÷ 10 =
  4. 4.382.1 × 10 =
  5. 5.2.44 × 1000 =
  6. 6.17.71 × 1000 =
  7. 7.123.1 ÷ 10 =
  8. 8.6.52 × 10 =
  9. 9.200.6 × 10 =
  10. 10.158.1 × 1000 =
  11. 11.86.1 × 10 =
  12. 12.32.84 × 1000 =
  13. 13.48.92 ÷ 100 =
  14. 14.8.11 × 10 =
  15. 15.34.51 × 10 =
  16. 16.455.9 × 100 =
  17. 17.10.81 ÷ 1000 =
  18. 18.41.2 × 100 =
  19. 19.68.2 ÷ 1000 =
  20. 20.130.3 ÷ 1000 =
  21. 21.12.09 ÷ 10 =
  22. 22.283.4 × 100 =
  23. 23.8.82 × 1000 =
  24. 24.46.83 ÷ 10 =
  25. 25.60.2 × 1000 =
  26. 26.392.4 × 10 =
  27. 27.305.6 ÷ 100 =
  28. 28.415.9 ÷ 10 =
  29. 29.9.29 ÷ 100 =
  30. 30.431.3 × 10 =
  31. 31.102.1 × 10 =
  32. 32.251.5 ÷ 100 =
  33. 33.36.92 × 10 =
  34. 34.137.5 ÷ 1000 =
  35. 35.36.08 × 10 =
  36. 36.347.1 ÷ 100 =
  37. 37.29.64 × 100 =
  38. 38.404.5 ÷ 10 =
  39. 39.246.1 ÷ 10 =
  40. 40.42.9 ÷ 10 =

Answer key

  1. 39.51
  2. 4.451
  3. 1.445
  4. 3821
  5. 2440
  6. 17710
  7. 12.31
  8. 65.2
  9. 2006
  10. 158100
  11. 861
  12. 32840
  13. 0.4892
  14. 81.1
  15. 345.1
  16. 45590
  17. 0.01081
  18. 4120
  19. 0.0682
  20. 0.1303
  21. 1.209
  22. 28340
  23. 8820
  24. 4.683
  25. 60200
  26. 3924
  27. 3.056
  28. 41.59
  29. 0.0929
  30. 4313
  31. 1021
  32. 2.515
  33. 369.2
  34. 0.1375
  35. 360.8
  36. 3.471
  37. 2964
  38. 40.45
  39. 24.61
  40. 4.29

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