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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 856 · 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. 1.99.4 × 10 =
  2. 2.124.3 × 1000 =
  3. 3.220.8 × 100 =
  4. 4.0.34 ÷ 100 =
  5. 5.7.54 × 100 =
  6. 6.19.32 × 10 =
  7. 7.170.1 × 10 =
  8. 8.81.6 ÷ 10 =
  9. 9.494.2 × 100 =
  10. 10.23.5 × 10 =
  11. 11.1.41 × 10 =
  12. 12.60.4 ÷ 1000 =
  13. 13.12.99 × 1000 =
  14. 14.20.38 × 10 =
  15. 15.9.14 × 1000 =
  16. 16.10.76 × 100 =
  17. 17.16.65 ÷ 10 =
  18. 18.0.65 ÷ 10 =
  19. 19.496.4 ÷ 100 =
  20. 20.10.91 × 10 =
  21. 21.24.77 × 10 =
  22. 22.6.81 × 10 =
  23. 23.41.58 × 10 =
  24. 24.46.61 × 100 =
  25. 25.111.1 × 100 =
  26. 26.144.3 ÷ 10 =
  27. 27.110.7 × 1000 =
  28. 28.28.59 ÷ 100 =
  29. 29.2.81 × 10 =
  30. 30.16.48 × 100 =
  31. 31.138.4 × 10 =
  32. 32.131.5 ÷ 1000 =
  33. 33.69.3 ÷ 100 =
  34. 34.491.3 × 100 =
  35. 35.60.6 ÷ 1000 =
  36. 36.9.71 ÷ 100 =
  37. 37.16.25 ÷ 10 =
  38. 38.476.1 × 1000 =
  39. 39.80.3 ÷ 1000 =
  40. 40.23.36 ÷ 100 =

Answer key

  1. 994
  2. 124300
  3. 22080
  4. 0.0034
  5. 754
  6. 193.2
  7. 1701
  8. 8.16
  9. 49420
  10. 235
  11. 14.1
  12. 0.0604
  13. 12990
  14. 203.8
  15. 9140
  16. 1076
  17. 1.665
  18. 0.065
  19. 4.964
  20. 109.1
  21. 247.7
  22. 68.1
  23. 415.8
  24. 4661
  25. 11110
  26. 14.43
  27. 110700
  28. 0.2859
  29. 28.1
  30. 1648
  31. 1384
  32. 0.1315
  33. 0.693
  34. 49130
  35. 0.0606
  36. 0.0971
  37. 1.625
  38. 476100
  39. 0.0803
  40. 0.2336

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