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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 708 · 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. 1.7.07 × 1000 =
  2. 2.486.4 × 1000 =
  3. 3.27.21 × 10 =
  4. 4.393.7 × 100 =
  5. 5.23.68 ÷ 10 =
  6. 6.196.7 ÷ 10 =
  7. 7.35.82 ÷ 1000 =
  8. 8.15.1 × 100 =
  9. 9.46.22 ÷ 10 =
  10. 10.34.63 × 10 =
  11. 11.27.93 ÷ 10 =
  12. 12.48.82 ÷ 100 =
  13. 13.209.6 ÷ 10 =
  14. 14.24.1 × 100 =
  15. 15.282.8 × 10 =
  16. 16.3.36 × 100 =
  17. 17.9.36 ÷ 1000 =
  18. 18.384.1 × 1000 =
  19. 19.26.09 × 1000 =
  20. 20.468.9 ÷ 1000 =
  21. 21.83.9 ÷ 10 =
  22. 22.44.7 × 100 =
  23. 23.13.98 × 100 =
  24. 24.15.74 × 10 =
  25. 25.247.1 × 10 =
  26. 26.298.4 × 1000 =
  27. 27.210.8 × 100 =
  28. 28.368.4 ÷ 1000 =
  29. 29.82.1 × 1000 =
  30. 30.45.48 ÷ 10 =
  31. 31.190.3 × 100 =
  32. 32.261.8 × 10 =
  33. 33.380.7 ÷ 100 =
  34. 34.35.5 ÷ 100 =
  35. 35.378.7 × 10 =
  36. 36.190.2 ÷ 10 =
  37. 37.376.5 ÷ 1000 =
  38. 38.25.06 × 10 =
  39. 39.25.61 ÷ 1000 =
  40. 40.399.8 × 10 =

Answer key

  1. 7070
  2. 486400
  3. 272.1
  4. 39370
  5. 2.368
  6. 19.67
  7. 0.03582
  8. 1510
  9. 4.622
  10. 346.3
  11. 2.793
  12. 0.4882
  13. 20.96
  14. 2410
  15. 2828
  16. 336
  17. 0.00936
  18. 384100
  19. 26090
  20. 0.4689
  21. 8.39
  22. 4470
  23. 1398
  24. 157.4
  25. 2471
  26. 298400
  27. 21080
  28. 0.3684
  29. 82100
  30. 4.548
  31. 19030
  32. 2618
  33. 3.807
  34. 0.355
  35. 3787
  36. 19.02
  37. 0.3765
  38. 250.6
  39. 0.02561
  40. 3998

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