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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 674 · 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. 1.303.1 × 10 =
  2. 2.46.69 × 100 =
  3. 3.218.1 × 100 =
  4. 4.138.6 ÷ 1000 =
  5. 5.23.1 ÷ 10 =
  6. 6.40.18 × 1000 =
  7. 7.21.73 × 1000 =
  8. 8.113.8 ÷ 100 =
  9. 9.52.1 ÷ 10 =
  10. 10.23.4 ÷ 10 =
  11. 11.7.43 × 100 =
  12. 12.361.1 × 1000 =
  13. 13.12.83 ÷ 100 =
  14. 14.47.95 ÷ 100 =
  15. 15.33.21 × 10 =
  16. 16.47.02 ÷ 10 =
  17. 17.97.5 × 100 =
  18. 18.214.8 × 100 =
  19. 19.1.71 × 100 =
  20. 20.22.18 ÷ 100 =
  21. 21.27.33 × 10 =
  22. 22.277.6 ÷ 1000 =
  23. 23.412.6 × 1000 =
  24. 24.467.3 ÷ 1000 =
  25. 25.344.4 × 10 =
  26. 26.293.4 ÷ 10 =
  27. 27.61.5 × 100 =
  28. 28.325.4 ÷ 100 =
  29. 29.155.1 × 100 =
  30. 30.213.6 × 100 =
  31. 31.33.76 ÷ 100 =
  32. 32.429.1 ÷ 10 =
  33. 33.386.6 × 1000 =
  34. 34.26.03 ÷ 1000 =
  35. 35.78.8 ÷ 100 =
  36. 36.48.18 × 1000 =
  37. 37.11.09 ÷ 10 =
  38. 38.42.19 × 10 =
  39. 39.26.17 × 1000 =
  40. 40.197.7 × 100 =

Answer key

  1. 3031
  2. 4669
  3. 21810
  4. 0.1386
  5. 2.31
  6. 40180
  7. 21730
  8. 1.138
  9. 5.21
  10. 2.34
  11. 743
  12. 361100
  13. 0.1283
  14. 0.4795
  15. 332.1
  16. 4.702
  17. 9750
  18. 21480
  19. 171
  20. 0.2218
  21. 273.3
  22. 0.2776
  23. 412600
  24. 0.4673
  25. 3444
  26. 29.34
  27. 6150
  28. 3.254
  29. 15510
  30. 21360
  31. 0.3376
  32. 42.91
  33. 386600
  34. 0.02603
  35. 0.788
  36. 48180
  37. 1.109
  38. 421.9
  39. 26170
  40. 19770

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