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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 695 · 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. 1.454.8 × 1000 =
  2. 2.248.3 ÷ 1000 =
  3. 3.35.92 × 100 =
  4. 4.129.9 ÷ 100 =
  5. 5.59.9 ÷ 10 =
  6. 6.25.5 ÷ 100 =
  7. 7.49.93 ÷ 10 =
  8. 8.2.65 ÷ 100 =
  9. 9.18.55 ÷ 1000 =
  10. 10.12.09 ÷ 1000 =
  11. 11.299.1 × 10 =
  12. 12.283.2 ÷ 100 =
  13. 13.225.1 × 100 =
  14. 14.217.2 × 1000 =
  15. 15.6.75 ÷ 100 =
  16. 16.86.2 ÷ 100 =
  17. 17.11.11 × 1000 =
  18. 18.26.18 × 10 =
  19. 19.65.1 × 1000 =
  20. 20.245.2 × 10 =
  21. 21.492.6 ÷ 100 =
  22. 22.1.41 ÷ 10 =
  23. 23.268.9 × 100 =
  24. 24.142.5 ÷ 10 =
  25. 25.301.1 ÷ 1000 =
  26. 26.19.9 × 100 =
  27. 27.434.1 ÷ 1000 =
  28. 28.22.43 ÷ 1000 =
  29. 29.43.64 × 1000 =
  30. 30.124.9 × 10 =
  31. 31.5.86 × 1000 =
  32. 32.39.05 × 100 =
  33. 33.48.85 × 10 =
  34. 34.364.9 ÷ 10 =
  35. 35.487.5 × 1000 =
  36. 36.43.76 × 100 =
  37. 37.292.2 × 10 =
  38. 38.25.6 ÷ 1000 =
  39. 39.284.1 ÷ 1000 =
  40. 40.327.1 ÷ 100 =

Answer key

  1. 454800
  2. 0.2483
  3. 3592
  4. 1.299
  5. 5.99
  6. 0.255
  7. 4.993
  8. 0.0265
  9. 0.01855
  10. 0.01209
  11. 2991
  12. 2.832
  13. 22510
  14. 217200
  15. 0.0675
  16. 0.862
  17. 11110
  18. 261.8
  19. 65100
  20. 2452
  21. 4.926
  22. 0.141
  23. 26890
  24. 14.25
  25. 0.3011
  26. 1990
  27. 0.4341
  28. 0.02243
  29. 43640
  30. 1249
  31. 5860
  32. 3905
  33. 488.5
  34. 36.49
  35. 487500
  36. 4376
  37. 2922
  38. 0.0256
  39. 0.2841
  40. 3.271

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