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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 455 · 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. 1.180.5 × 100 =
  2. 2.4.05 ÷ 10 =
  3. 3.470.1 ÷ 10 =
  4. 4.63.6 ÷ 10 =
  5. 5.40.56 × 100 =
  6. 6.43.21 × 10 =
  7. 7.41.51 ÷ 1000 =
  8. 8.0.21 × 1000 =
  9. 9.36.13 ÷ 10 =
  10. 10.29.69 × 100 =
  11. 11.40.84 × 1000 =
  12. 12.46.61 × 1000 =
  13. 13.330.1 × 1000 =
  14. 14.29.44 ÷ 100 =
  15. 15.188.1 × 10 =
  16. 16.8.76 × 1000 =
  17. 17.37.34 × 10 =
  18. 18.16.26 × 10 =
  19. 19.350.8 × 10 =
  20. 20.358.2 × 10 =
  21. 21.427.6 ÷ 100 =
  22. 22.336.7 ÷ 10 =
  23. 23.10.11 × 1000 =
  24. 24.400.4 × 100 =
  25. 25.20.66 ÷ 10 =
  26. 26.6.81 ÷ 1000 =
  27. 27.7.22 × 1000 =
  28. 28.28.82 ÷ 100 =
  29. 29.29.41 × 1000 =
  30. 30.133.1 ÷ 1000 =
  31. 31.31.1 ÷ 10 =
  32. 32.493.8 × 1000 =
  33. 33.104.4 ÷ 1000 =
  34. 34.205.1 ÷ 10 =
  35. 35.8.22 × 1000 =
  36. 36.5.04 ÷ 1000 =
  37. 37.422.7 × 10 =
  38. 38.137.6 × 1000 =
  39. 39.23.1 ÷ 100 =
  40. 40.29.85 × 100 =

Answer key

  1. 18050
  2. 0.405
  3. 47.01
  4. 6.36
  5. 4056
  6. 432.1
  7. 0.04151
  8. 210
  9. 3.613
  10. 2969
  11. 40840
  12. 46610
  13. 330100
  14. 0.2944
  15. 1881
  16. 8760
  17. 373.4
  18. 162.6
  19. 3508
  20. 3582
  21. 4.276
  22. 33.67
  23. 10110
  24. 40040
  25. 2.066
  26. 0.00681
  27. 7220
  28. 0.2882
  29. 29410
  30. 0.1331
  31. 3.11
  32. 493800
  33. 0.1044
  34. 20.51
  35. 8220
  36. 0.00504
  37. 4227
  38. 137600
  39. 0.231
  40. 2985

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