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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 374 · 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. 1.46.91 ÷ 100 =
  2. 2.13.4 × 10 =
  3. 3.315.5 × 100 =
  4. 4.28.97 ÷ 10 =
  5. 5.23.39 ÷ 100 =
  6. 6.13.25 × 10 =
  7. 7.340.8 × 1000 =
  8. 8.36.78 ÷ 1000 =
  9. 9.22.02 ÷ 10 =
  10. 10.11.87 ÷ 1000 =
  11. 11.189.1 ÷ 10 =
  12. 12.380.5 ÷ 10 =
  13. 13.5.21 ÷ 100 =
  14. 14.18.69 ÷ 1000 =
  15. 15.39.38 ÷ 100 =
  16. 16.41.76 × 10 =
  17. 17.10.27 ÷ 100 =
  18. 18.464.8 × 10 =
  19. 19.33.42 × 100 =
  20. 20.129.4 ÷ 100 =
  21. 21.31.23 × 100 =
  22. 22.263.4 ÷ 10 =
  23. 23.215.7 × 10 =
  24. 24.35.67 ÷ 100 =
  25. 25.343.6 × 1000 =
  26. 26.253.1 ÷ 10 =
  27. 27.0.22 × 10 =
  28. 28.58.3 × 1000 =
  29. 29.6.39 × 10 =
  30. 30.332.7 ÷ 1000 =
  31. 31.48.68 ÷ 1000 =
  32. 32.499.7 × 100 =
  33. 33.29.01 × 10 =
  34. 34.221.9 ÷ 1000 =
  35. 35.23.94 ÷ 1000 =
  36. 36.21.93 ÷ 10 =
  37. 37.48.78 ÷ 1000 =
  38. 38.185.3 ÷ 1000 =
  39. 39.31.38 × 100 =
  40. 40.464.8 ÷ 10 =

Answer key

  1. 0.4691
  2. 134
  3. 31550
  4. 2.897
  5. 0.2339
  6. 132.5
  7. 340800
  8. 0.03678
  9. 2.202
  10. 0.01187
  11. 18.91
  12. 38.05
  13. 0.0521
  14. 0.01869
  15. 0.3938
  16. 417.6
  17. 0.1027
  18. 4648
  19. 3342
  20. 1.294
  21. 3123
  22. 26.34
  23. 2157
  24. 0.3567
  25. 343600
  26. 25.31
  27. 2.2
  28. 58300
  29. 63.9
  30. 0.3327
  31. 0.04868
  32. 49970
  33. 290.1
  34. 0.2219
  35. 0.02394
  36. 2.193
  37. 0.04878
  38. 0.1853
  39. 3138
  40. 46.48

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