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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 902 · 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. 1.23.31 × 1000 =
  2. 2.8.91 ÷ 1000 =
  3. 3.15.5 × 10 =
  4. 4.2.42 ÷ 100 =
  5. 5.469.5 × 10 =
  6. 6.21.12 × 10 =
  7. 7.252.7 × 100 =
  8. 8.3.35 ÷ 100 =
  9. 9.361.1 × 10 =
  10. 10.150.1 × 10 =
  11. 11.25.92 ÷ 1000 =
  12. 12.14.69 × 10 =
  13. 13.34.21 × 1000 =
  14. 14.174.2 × 100 =
  15. 15.22.43 × 100 =
  16. 16.87.8 ÷ 1000 =
  17. 17.68.1 ÷ 10 =
  18. 18.225.1 × 10 =
  19. 19.400.3 × 1000 =
  20. 20.428.9 × 10 =
  21. 21.32.96 ÷ 1000 =
  22. 22.425.5 × 100 =
  23. 23.327.5 × 10 =
  24. 24.25.08 ÷ 10 =
  25. 25.249.4 × 10 =
  26. 26.104.1 ÷ 10 =
  27. 27.180.9 ÷ 1000 =
  28. 28.335.7 × 10 =
  29. 29.405.6 ÷ 1000 =
  30. 30.20.81 × 10 =
  31. 31.164.9 × 100 =
  32. 32.36.61 ÷ 10 =
  33. 33.296.1 ÷ 10 =
  34. 34.279.7 ÷ 1000 =
  35. 35.232.1 × 100 =
  36. 36.466.1 ÷ 10 =
  37. 37.462.4 ÷ 10 =
  38. 38.95.6 ÷ 10 =
  39. 39.23.06 × 1000 =
  40. 40.444.2 ÷ 1000 =

Answer key

  1. 23310
  2. 0.00891
  3. 155
  4. 0.0242
  5. 4695
  6. 211.2
  7. 25270
  8. 0.0335
  9. 3611
  10. 1501
  11. 0.02592
  12. 146.9
  13. 34210
  14. 17420
  15. 2243
  16. 0.0878
  17. 6.81
  18. 2251
  19. 400300
  20. 4289
  21. 0.03296
  22. 42550
  23. 3275
  24. 2.508
  25. 2494
  26. 10.41
  27. 0.1809
  28. 3357
  29. 0.4056
  30. 208.1
  31. 16490
  32. 3.661
  33. 29.61
  34. 0.2797
  35. 23210
  36. 46.61
  37. 46.24
  38. 9.56
  39. 23060
  40. 0.4442

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