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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 61 · 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. 1.100.2 ÷ 100 =
  2. 2.37.78 × 1000 =
  3. 3.468.7 ÷ 100 =
  4. 4.266.9 × 1000 =
  5. 5.23.6 × 10 =
  6. 6.352.8 ÷ 10 =
  7. 7.430.7 × 10 =
  8. 8.326.5 × 100 =
  9. 9.453.1 ÷ 10 =
  10. 10.26.91 × 10 =
  11. 11.43.39 ÷ 10 =
  12. 12.405.9 × 10 =
  13. 13.1.9 × 100 =
  14. 14.5.22 ÷ 10 =
  15. 15.2.71 ÷ 10 =
  16. 16.12.81 × 100 =
  17. 17.205.1 × 1000 =
  18. 18.395.6 ÷ 10 =
  19. 19.30.03 × 10 =
  20. 20.10.01 × 10 =
  21. 21.100.1 × 10 =
  22. 22.162.1 × 10 =
  23. 23.17.11 ÷ 1000 =
  24. 24.437.4 ÷ 10 =
  25. 25.33.62 ÷ 10 =
  26. 26.38.13 ÷ 1000 =
  27. 27.12.17 ÷ 10 =
  28. 28.499.6 × 100 =
  29. 29.273.6 ÷ 1000 =
  30. 30.69.7 × 100 =
  31. 31.27.87 ÷ 1000 =
  32. 32.436.2 × 10 =
  33. 33.15.81 × 1000 =
  34. 34.257.3 × 10 =
  35. 35.328.8 ÷ 10 =
  36. 36.167.1 ÷ 1000 =
  37. 37.29.15 ÷ 1000 =
  38. 38.294.1 ÷ 1000 =
  39. 39.40.3 ÷ 100 =
  40. 40.176.1 × 10 =

Answer key

  1. 1.002
  2. 37780
  3. 4.687
  4. 266900
  5. 236
  6. 35.28
  7. 4307
  8. 32650
  9. 45.31
  10. 269.1
  11. 4.339
  12. 4059
  13. 190
  14. 0.522
  15. 0.271
  16. 1281
  17. 205100
  18. 39.56
  19. 300.3
  20. 100.1
  21. 1001
  22. 1621
  23. 0.01711
  24. 43.74
  25. 3.362
  26. 0.03813
  27. 1.217
  28. 49960
  29. 0.2736
  30. 6970
  31. 0.02787
  32. 4362
  33. 15810
  34. 2573
  35. 32.88
  36. 0.1671
  37. 0.02915
  38. 0.2941
  39. 0.403
  40. 1761

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