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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 23 · 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. 1.48.09 ÷ 100 =
  2. 2.136.9 ÷ 1000 =
  3. 3.441.6 ÷ 1000 =
  4. 4.27.91 × 100 =
  5. 5.185.3 ÷ 10 =
  6. 6.48.26 × 100 =
  7. 7.229.4 ÷ 10 =
  8. 8.190.6 × 10 =
  9. 9.9.95 × 1000 =
  10. 10.292.1 × 1000 =
  11. 11.204.4 ÷ 1000 =
  12. 12.33.35 ÷ 10 =
  13. 13.10.63 × 10 =
  14. 14.219.1 × 10 =
  15. 15.146.3 × 100 =
  16. 16.23.15 ÷ 10 =
  17. 17.382.8 × 1000 =
  18. 18.10.39 × 100 =
  19. 19.33.53 × 10 =
  20. 20.304.8 ÷ 1000 =
  21. 21.447.1 ÷ 100 =
  22. 22.354.4 × 100 =
  23. 23.460.6 × 10 =
  24. 24.24.57 × 100 =
  25. 25.455.4 ÷ 1000 =
  26. 26.18.31 × 10 =
  27. 27.21.68 ÷ 1000 =
  28. 28.46.2 ÷ 10 =
  29. 29.9.58 ÷ 100 =
  30. 30.498.1 × 10 =
  31. 31.420.7 × 1000 =
  32. 32.123.1 ÷ 10 =
  33. 33.333.8 × 1000 =
  34. 34.16.13 × 100 =
  35. 35.1.71 × 1000 =
  36. 36.44.81 × 10 =
  37. 37.17.7 × 100 =
  38. 38.29.78 ÷ 1000 =
  39. 39.338.1 × 100 =
  40. 40.40.42 × 1000 =

Answer key

  1. 0.4809
  2. 0.1369
  3. 0.4416
  4. 2791
  5. 18.53
  6. 4826
  7. 22.94
  8. 1906
  9. 9950
  10. 292100
  11. 0.2044
  12. 3.335
  13. 106.3
  14. 2191
  15. 14630
  16. 2.315
  17. 382800
  18. 1039
  19. 335.3
  20. 0.3048
  21. 4.471
  22. 35440
  23. 4606
  24. 2457
  25. 0.4554
  26. 183.1
  27. 0.02168
  28. 4.62
  29. 0.0958
  30. 4981
  31. 420700
  32. 12.31
  33. 333800
  34. 1613
  35. 1710
  36. 448.1
  37. 1770
  38. 0.02978
  39. 33810
  40. 40420

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