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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 491 · 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. 1.410.3 × 100 =
  2. 2.4.14 ÷ 100 =
  3. 3.111.4 ÷ 10 =
  4. 4.473.9 × 1000 =
  5. 5.190.1 ÷ 1000 =
  6. 6.43.65 ÷ 1000 =
  7. 7.270.4 × 100 =
  8. 8.28.69 × 10 =
  9. 9.21.26 × 1000 =
  10. 10.20.01 ÷ 1000 =
  11. 11.301.3 ÷ 1000 =
  12. 12.16.41 × 10 =
  13. 13.39.56 × 1000 =
  14. 14.319.7 ÷ 10 =
  15. 15.288.3 ÷ 10 =
  16. 16.33.01 × 1000 =
  17. 17.17.73 ÷ 10 =
  18. 18.10.39 ÷ 1000 =
  19. 19.316.4 ÷ 1000 =
  20. 20.111.9 ÷ 1000 =
  21. 21.59.8 ÷ 1000 =
  22. 22.24.76 ÷ 1000 =
  23. 23.49.83 ÷ 100 =
  24. 24.4.88 ÷ 100 =
  25. 25.13.54 ÷ 10 =
  26. 26.349.4 × 1000 =
  27. 27.257.8 × 10 =
  28. 28.199.4 × 10 =
  29. 29.416.3 ÷ 1000 =
  30. 30.322.9 × 100 =
  31. 31.336.5 ÷ 10 =
  32. 32.9.13 ÷ 10 =
  33. 33.40.16 ÷ 10 =
  34. 34.49.45 × 100 =
  35. 35.24.41 ÷ 100 =
  36. 36.5.68 ÷ 10 =
  37. 37.499.6 × 1000 =
  38. 38.30.5 ÷ 1000 =
  39. 39.253.9 × 10 =
  40. 40.8.61 × 10 =

Answer key

  1. 41030
  2. 0.0414
  3. 11.14
  4. 473900
  5. 0.1901
  6. 0.04365
  7. 27040
  8. 286.9
  9. 21260
  10. 0.02001
  11. 0.3013
  12. 164.1
  13. 39560
  14. 31.97
  15. 28.83
  16. 33010
  17. 1.773
  18. 0.01039
  19. 0.3164
  20. 0.1119
  21. 0.0598
  22. 0.02476
  23. 0.4983
  24. 0.0488
  25. 1.354
  26. 349400
  27. 2578
  28. 1994
  29. 0.4163
  30. 32290
  31. 33.65
  32. 0.913
  33. 4.016
  34. 4945
  35. 0.2441
  36. 0.568
  37. 499600
  38. 0.0305
  39. 2539
  40. 86.1

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