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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 421 · 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. 1.116.7 × 10 =
  2. 2.26.79 × 10 =
  3. 3.3.86 × 100 =
  4. 4.47.33 ÷ 10 =
  5. 5.18.99 × 100 =
  6. 6.31.1 ÷ 1000 =
  7. 7.103.8 ÷ 10 =
  8. 8.388.5 × 1000 =
  9. 9.108.7 ÷ 10 =
  10. 10.181.3 × 10 =
  11. 11.26.68 × 100 =
  12. 12.0.82 × 10 =
  13. 13.262.1 × 100 =
  14. 14.45.98 ÷ 100 =
  15. 15.23.95 ÷ 100 =
  16. 16.34.29 ÷ 10 =
  17. 17.421.2 ÷ 10 =
  18. 18.11.42 ÷ 100 =
  19. 19.7.11 × 1000 =
  20. 20.37.96 ÷ 10 =
  21. 21.266.7 ÷ 100 =
  22. 22.442.5 × 100 =
  23. 23.61.1 ÷ 10 =
  24. 24.11.41 × 10 =
  25. 25.213.1 ÷ 100 =
  26. 26.373.9 × 10 =
  27. 27.215.1 ÷ 10 =
  28. 28.260.1 ÷ 100 =
  29. 29.2.36 × 10 =
  30. 30.205.1 ÷ 10 =
  31. 31.29.01 × 10 =
  32. 32.21.23 × 100 =
  33. 33.43.7 ÷ 100 =
  34. 34.25.7 ÷ 1000 =
  35. 35.18.33 × 100 =
  36. 36.8.79 × 100 =
  37. 37.33.02 ÷ 100 =
  38. 38.31.86 × 1000 =
  39. 39.6.41 × 10 =
  40. 40.33.72 ÷ 1000 =

Answer key

  1. 1167
  2. 267.9
  3. 386
  4. 4.733
  5. 1899
  6. 0.0311
  7. 10.38
  8. 388500
  9. 10.87
  10. 1813
  11. 2668
  12. 8.2
  13. 26210
  14. 0.4598
  15. 0.2395
  16. 3.429
  17. 42.12
  18. 0.1142
  19. 7110
  20. 3.796
  21. 2.667
  22. 44250
  23. 6.11
  24. 114.1
  25. 2.131
  26. 3739
  27. 21.51
  28. 2.601
  29. 23.6
  30. 20.51
  31. 290.1
  32. 2123
  33. 0.437
  34. 0.0257
  35. 1833
  36. 879
  37. 0.3302
  38. 31860
  39. 64.1
  40. 0.03372

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