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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 982 · 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. 1.2.75 ÷ 100 =
  2. 2.13.73 × 1000 =
  3. 3.33.55 ÷ 1000 =
  4. 4.2.69 × 1000 =
  5. 5.445.1 ÷ 100 =
  6. 6.31.91 × 10 =
  7. 7.17.96 ÷ 1000 =
  8. 8.209.7 × 100 =
  9. 9.39.44 ÷ 100 =
  10. 10.39.06 ÷ 100 =
  11. 11.84.5 ÷ 1000 =
  12. 12.195.5 × 100 =
  13. 13.309.9 ÷ 10 =
  14. 14.40.4 × 10 =
  15. 15.53.6 ÷ 10 =
  16. 16.25.5 × 10 =
  17. 17.15.01 ÷ 10 =
  18. 18.17.83 ÷ 100 =
  19. 19.19.55 × 100 =
  20. 20.2.16 × 1000 =
  21. 21.371.8 ÷ 100 =
  22. 22.8.47 ÷ 100 =
  23. 23.36.6 × 1000 =
  24. 24.12.91 ÷ 10 =
  25. 25.24.9 × 1000 =
  26. 26.200.1 ÷ 10 =
  27. 27.8.22 ÷ 100 =
  28. 28.182.7 ÷ 10 =
  29. 29.118.1 × 10 =
  30. 30.285.8 ÷ 10 =
  31. 31.115.8 × 100 =
  32. 32.127.6 ÷ 100 =
  33. 33.190.1 × 10 =
  34. 34.272.8 × 100 =
  35. 35.22.28 × 1000 =
  36. 36.37.76 ÷ 100 =
  37. 37.20.52 × 10 =
  38. 38.134.1 × 10 =
  39. 39.21.93 × 100 =
  40. 40.261.8 × 10 =

Answer key

  1. 0.0275
  2. 13730
  3. 0.03355
  4. 2690
  5. 4.451
  6. 319.1
  7. 0.01796
  8. 20970
  9. 0.3944
  10. 0.3906
  11. 0.0845
  12. 19550
  13. 30.99
  14. 404
  15. 5.36
  16. 255
  17. 1.501
  18. 0.1783
  19. 1955
  20. 2160
  21. 3.718
  22. 0.0847
  23. 36600
  24. 1.291
  25. 24900
  26. 20.01
  27. 0.0822
  28. 18.27
  29. 1181
  30. 28.58
  31. 11580
  32. 1.276
  33. 1901
  34. 27280
  35. 22280
  36. 0.3776
  37. 205.2
  38. 1341
  39. 2193
  40. 2618

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