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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 974 · 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. 1.5.16 × 10 =
  2. 2.483.2 ÷ 1000 =
  3. 3.12.6 ÷ 1000 =
  4. 4.122.6 × 10 =
  5. 5.13.9 × 10 =
  6. 6.26.64 × 100 =
  7. 7.344.8 ÷ 100 =
  8. 8.42.24 × 1000 =
  9. 9.39.54 × 10 =
  10. 10.293.9 ÷ 10 =
  11. 11.123.2 ÷ 10 =
  12. 12.18.57 × 1000 =
  13. 13.211.3 × 1000 =
  14. 14.36.89 ÷ 1000 =
  15. 15.9.06 × 100 =
  16. 16.333.1 × 10 =
  17. 17.84.2 ÷ 100 =
  18. 18.492.1 × 100 =
  19. 19.40.69 × 10 =
  20. 20.230.1 ÷ 10 =
  21. 21.31.87 ÷ 100 =
  22. 22.33.51 × 100 =
  23. 23.65.7 ÷ 1000 =
  24. 24.35.61 × 10 =
  25. 25.23.81 × 1000 =
  26. 26.363.5 × 100 =
  27. 27.345.2 × 10 =
  28. 28.15.11 × 10 =
  29. 29.44.27 ÷ 100 =
  30. 30.10.71 × 1000 =
  31. 31.350.1 × 10 =
  32. 32.43.26 × 10 =
  33. 33.217.8 ÷ 10 =
  34. 34.152.3 ÷ 10 =
  35. 35.8.14 × 10 =
  36. 36.36.2 × 100 =
  37. 37.384.7 ÷ 100 =
  38. 38.217.4 ÷ 10 =
  39. 39.470.9 ÷ 100 =
  40. 40.31.83 ÷ 100 =

Answer key

  1. 51.6
  2. 0.4832
  3. 0.0126
  4. 1226
  5. 139
  6. 2664
  7. 3.448
  8. 42240
  9. 395.4
  10. 29.39
  11. 12.32
  12. 18570
  13. 211300
  14. 0.03689
  15. 906
  16. 3331
  17. 0.842
  18. 49210
  19. 406.9
  20. 23.01
  21. 0.3187
  22. 3351
  23. 0.0657
  24. 356.1
  25. 23810
  26. 36350
  27. 3452
  28. 151.1
  29. 0.4427
  30. 10710
  31. 3501
  32. 432.6
  33. 21.78
  34. 15.23
  35. 81.4
  36. 3620
  37. 3.847
  38. 21.74
  39. 4.709
  40. 0.3183

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