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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 5 · 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. 1.34.77 × 100 =
  2. 2.310.3 × 100 =
  3. 3.125.5 × 1000 =
  4. 4.55.5 ÷ 1000 =
  5. 5.343.1 × 1000 =
  6. 6.58.1 × 10 =
  7. 7.38.97 ÷ 100 =
  8. 8.339.7 ÷ 100 =
  9. 9.81.4 ÷ 10 =
  10. 10.40.65 ÷ 100 =
  11. 11.467.1 × 10 =
  12. 12.102.5 × 10 =
  13. 13.6.38 ÷ 10 =
  14. 14.121.7 × 100 =
  15. 15.248.8 × 1000 =
  16. 16.15.31 × 10 =
  17. 17.235.6 ÷ 10 =
  18. 18.16.41 ÷ 10 =
  19. 19.197.8 × 10 =
  20. 20.30.94 ÷ 100 =
  21. 21.172.2 ÷ 100 =
  22. 22.5.35 × 1000 =
  23. 23.3.53 ÷ 10 =
  24. 24.27.79 × 1000 =
  25. 25.20.5 ÷ 100 =
  26. 26.331.6 × 10 =
  27. 27.31.2 × 10 =
  28. 28.41.9 ÷ 100 =
  29. 29.499.1 × 10 =
  30. 30.40.5 × 100 =
  31. 31.32.57 × 100 =
  32. 32.168.9 ÷ 1000 =
  33. 33.24.18 × 100 =
  34. 34.1.99 × 1000 =
  35. 35.26.08 × 1000 =
  36. 36.256.2 ÷ 100 =
  37. 37.33.41 ÷ 1000 =
  38. 38.5.38 ÷ 10 =
  39. 39.188.9 × 1000 =
  40. 40.313.1 × 10 =

Answer key

  1. 3477
  2. 31030
  3. 125500
  4. 0.0555
  5. 343100
  6. 581
  7. 0.3897
  8. 3.397
  9. 8.14
  10. 0.4065
  11. 4671
  12. 1025
  13. 0.638
  14. 12170
  15. 248800
  16. 153.1
  17. 23.56
  18. 1.641
  19. 1978
  20. 0.3094
  21. 1.722
  22. 5350
  23. 0.353
  24. 27790
  25. 0.205
  26. 3316
  27. 312
  28. 0.419
  29. 4991
  30. 4050
  31. 3257
  32. 0.1689
  33. 2418
  34. 1990
  35. 26080
  36. 2.562
  37. 0.03341
  38. 0.538
  39. 188900
  40. 3131

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