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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 259 · 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. 1.29.75 × 10 =
  2. 2.22.19 × 100 =
  3. 3.56.9 ÷ 10 =
  4. 4.18.09 × 10 =
  5. 5.8.33 ÷ 1000 =
  6. 6.14.97 ÷ 100 =
  7. 7.71.5 ÷ 100 =
  8. 8.456.9 ÷ 100 =
  9. 9.295.3 ÷ 1000 =
  10. 10.380.7 ÷ 100 =
  11. 11.5.5 × 10 =
  12. 12.60.1 × 10 =
  13. 13.37.06 × 10 =
  14. 14.44.76 ÷ 10 =
  15. 15.137.2 × 1000 =
  16. 16.342.1 × 10 =
  17. 17.61.1 × 100 =
  18. 18.15.59 × 100 =
  19. 19.182.3 ÷ 10 =
  20. 20.253.1 × 10 =
  21. 21.14.4 × 100 =
  22. 22.48.25 ÷ 10 =
  23. 23.304.2 ÷ 100 =
  24. 24.414.2 ÷ 100 =
  25. 25.215.4 × 10 =
  26. 26.113.5 × 10 =
  27. 27.398.1 × 100 =
  28. 28.483.1 ÷ 100 =
  29. 29.240.1 ÷ 100 =
  30. 30.5.06 ÷ 1000 =
  31. 31.293.9 × 1000 =
  32. 32.0.53 × 10 =
  33. 33.11.99 ÷ 100 =
  34. 34.11.52 × 1000 =
  35. 35.362.1 × 100 =
  36. 36.7.43 × 10 =
  37. 37.43.17 ÷ 10 =
  38. 38.11.34 × 10 =
  39. 39.252.5 × 100 =
  40. 40.64.4 ÷ 100 =

Answer key

  1. 297.5
  2. 2219
  3. 5.69
  4. 180.9
  5. 0.00833
  6. 0.1497
  7. 0.715
  8. 4.569
  9. 0.2953
  10. 3.807
  11. 55
  12. 601
  13. 370.6
  14. 4.476
  15. 137200
  16. 3421
  17. 6110
  18. 1559
  19. 18.23
  20. 2531
  21. 1440
  22. 4.825
  23. 3.042
  24. 4.142
  25. 2154
  26. 1135
  27. 39810
  28. 4.831
  29. 2.401
  30. 0.00506
  31. 293900
  32. 5.3
  33. 0.1199
  34. 11520
  35. 36210
  36. 74.3
  37. 4.317
  38. 113.4
  39. 25250
  40. 0.644

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