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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 744 · 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. 1.5.19 × 10 =
  2. 2.416.8 ÷ 1000 =
  3. 3.4.23 × 10 =
  4. 4.36.8 × 100 =
  5. 5.182.6 × 10 =
  6. 6.42.19 × 10 =
  7. 7.31.54 × 1000 =
  8. 8.114.6 × 1000 =
  9. 9.332.1 × 1000 =
  10. 10.158.3 ÷ 100 =
  11. 11.12.71 × 1000 =
  12. 12.140.7 ÷ 1000 =
  13. 13.492.9 × 100 =
  14. 14.5.27 × 1000 =
  15. 15.8.72 ÷ 10 =
  16. 16.185.2 × 10 =
  17. 17.11.63 × 1000 =
  18. 18.12.55 × 1000 =
  19. 19.183.1 × 10 =
  20. 20.7.88 ÷ 10 =
  21. 21.12.31 ÷ 10 =
  22. 22.41.44 ÷ 1000 =
  23. 23.101.3 × 1000 =
  24. 24.16.32 × 1000 =
  25. 25.295.3 × 100 =
  26. 26.32.59 × 100 =
  27. 27.418.5 ÷ 100 =
  28. 28.7.64 ÷ 10 =
  29. 29.47.34 × 100 =
  30. 30.198.9 ÷ 1000 =
  31. 31.497.8 × 10 =
  32. 32.18.81 ÷ 1000 =
  33. 33.10.44 ÷ 1000 =
  34. 34.2.55 ÷ 10 =
  35. 35.14.1 × 100 =
  36. 36.4.35 × 10 =
  37. 37.28.91 × 1000 =
  38. 38.27.82 × 100 =
  39. 39.31.21 × 1000 =
  40. 40.418.2 ÷ 100 =

Answer key

  1. 51.9
  2. 0.4168
  3. 42.3
  4. 3680
  5. 1826
  6. 421.9
  7. 31540
  8. 114600
  9. 332100
  10. 1.583
  11. 12710
  12. 0.1407
  13. 49290
  14. 5270
  15. 0.872
  16. 1852
  17. 11630
  18. 12550
  19. 1831
  20. 0.788
  21. 1.231
  22. 0.04144
  23. 101300
  24. 16320
  25. 29530
  26. 3259
  27. 4.185
  28. 0.764
  29. 4734
  30. 0.1989
  31. 4978
  32. 0.01881
  33. 0.01044
  34. 0.255
  35. 1410
  36. 43.5
  37. 28910
  38. 2782
  39. 31210
  40. 4.182

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