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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 43 · 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. 1.277.5 × 10 =
  2. 2.46.16 ÷ 10 =
  3. 3.376.1 × 100 =
  4. 4.89.5 × 100 =
  5. 5.434.7 × 10 =
  6. 6.336.7 ÷ 100 =
  7. 7.362.4 × 1000 =
  8. 8.171.1 × 1000 =
  9. 9.80.6 × 10 =
  10. 10.12.87 × 10 =
  11. 11.319.5 × 100 =
  12. 12.385.2 × 100 =
  13. 13.434.2 × 100 =
  14. 14.93.7 × 1000 =
  15. 15.34.31 ÷ 100 =
  16. 16.306.1 × 1000 =
  17. 17.10.35 × 10 =
  18. 18.436.1 × 10 =
  19. 19.29.76 × 100 =
  20. 20.2.83 × 1000 =
  21. 21.432.8 ÷ 1000 =
  22. 22.426.5 × 10 =
  23. 23.307.7 × 100 =
  24. 24.496.4 × 100 =
  25. 25.420.1 × 1000 =
  26. 26.52.1 ÷ 1000 =
  27. 27.28.61 × 100 =
  28. 28.31.58 × 10 =
  29. 29.21.45 × 100 =
  30. 30.57.3 ÷ 10 =
  31. 31.240.1 × 1000 =
  32. 32.27.05 × 10 =
  33. 33.15.68 ÷ 100 =
  34. 34.4.12 ÷ 1000 =
  35. 35.19.77 × 1000 =
  36. 36.10.97 × 1000 =
  37. 37.28.25 ÷ 100 =
  38. 38.237.1 × 10 =
  39. 39.414.3 × 100 =
  40. 40.30.87 × 10 =

Answer key

  1. 2775
  2. 4.616
  3. 37610
  4. 8950
  5. 4347
  6. 3.367
  7. 362400
  8. 171100
  9. 806
  10. 128.7
  11. 31950
  12. 38520
  13. 43420
  14. 93700
  15. 0.3431
  16. 306100
  17. 103.5
  18. 4361
  19. 2976
  20. 2830
  21. 0.4328
  22. 4265
  23. 30770
  24. 49640
  25. 420100
  26. 0.0521
  27. 2861
  28. 315.8
  29. 2145
  30. 5.73
  31. 240100
  32. 270.5
  33. 0.1568
  34. 0.00412
  35. 19770
  36. 10970
  37. 0.2825
  38. 2371
  39. 41430
  40. 308.7

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