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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 300 · 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. 1.49.69 × 10 =
  2. 2.13.21 ÷ 1000 =
  3. 3.25.93 ÷ 100 =
  4. 4.429.3 ÷ 100 =
  5. 5.357.1 × 10 =
  6. 6.23.98 ÷ 1000 =
  7. 7.85.5 × 100 =
  8. 8.26.13 ÷ 100 =
  9. 9.48.15 ÷ 100 =
  10. 10.476.7 × 100 =
  11. 11.27.26 ÷ 1000 =
  12. 12.127.7 × 10 =
  13. 13.140.6 × 10 =
  14. 14.498.2 ÷ 1000 =
  15. 15.109.8 × 10 =
  16. 16.17.76 ÷ 10 =
  17. 17.407.1 ÷ 100 =
  18. 18.37.01 ÷ 10 =
  19. 19.32.51 × 100 =
  20. 20.21.63 ÷ 10 =
  21. 21.451.2 ÷ 1000 =
  22. 22.142.4 × 10 =
  23. 23.318.3 ÷ 1000 =
  24. 24.6.7 × 100 =
  25. 25.437.6 ÷ 10 =
  26. 26.28.51 × 100 =
  27. 27.110.9 × 1000 =
  28. 28.7.68 × 100 =
  29. 29.34.12 ÷ 100 =
  30. 30.440.1 ÷ 100 =
  31. 31.72.7 × 1000 =
  32. 32.26.3 ÷ 100 =
  33. 33.19.51 ÷ 100 =
  34. 34.68.6 × 100 =
  35. 35.450.1 × 100 =
  36. 36.39.25 ÷ 1000 =
  37. 37.127.5 × 10 =
  38. 38.4.28 ÷ 1000 =
  39. 39.41.81 × 10 =
  40. 40.27.13 × 10 =

Answer key

  1. 496.9
  2. 0.01321
  3. 0.2593
  4. 4.293
  5. 3571
  6. 0.02398
  7. 8550
  8. 0.2613
  9. 0.4815
  10. 47670
  11. 0.02726
  12. 1277
  13. 1406
  14. 0.4982
  15. 1098
  16. 1.776
  17. 4.071
  18. 3.701
  19. 3251
  20. 2.163
  21. 0.4512
  22. 1424
  23. 0.3183
  24. 670
  25. 43.76
  26. 2851
  27. 110900
  28. 768
  29. 0.3412
  30. 4.401
  31. 72700
  32. 0.263
  33. 0.1951
  34. 6860
  35. 45010
  36. 0.03925
  37. 1275
  38. 0.00428
  39. 418.1
  40. 271.3

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