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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 430 · 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. 1.16.57 × 10 =
  2. 2.370.1 × 100 =
  3. 3.35.94 × 1000 =
  4. 4.250.3 × 10 =
  5. 5.31.36 × 10 =
  6. 6.211.1 × 1000 =
  7. 7.457.1 ÷ 10 =
  8. 8.234.2 × 1000 =
  9. 9.48.48 × 1000 =
  10. 10.310.9 ÷ 1000 =
  11. 11.23.47 × 1000 =
  12. 12.37.11 × 100 =
  13. 13.201.1 × 1000 =
  14. 14.455.8 × 10 =
  15. 15.12.61 ÷ 1000 =
  16. 16.471.4 × 100 =
  17. 17.293.9 ÷ 100 =
  18. 18.306.2 × 1000 =
  19. 19.354.4 × 100 =
  20. 20.6.08 × 100 =
  21. 21.325.7 ÷ 10 =
  22. 22.49.01 ÷ 1000 =
  23. 23.20.45 × 100 =
  24. 24.12.45 × 10 =
  25. 25.20.04 ÷ 1000 =
  26. 26.182.6 ÷ 100 =
  27. 27.49.42 ÷ 1000 =
  28. 28.8.1 × 100 =
  29. 29.44.06 ÷ 1000 =
  30. 30.22.09 × 1000 =
  31. 31.365.1 ÷ 1000 =
  32. 32.418.2 × 1000 =
  33. 33.49.61 × 10 =
  34. 34.5.78 × 1000 =
  35. 35.28.48 × 10 =
  36. 36.312.3 ÷ 100 =
  37. 37.429.6 × 100 =
  38. 38.27.9 ÷ 10 =
  39. 39.380.2 ÷ 100 =
  40. 40.7.69 × 1000 =

Answer key

  1. 165.7
  2. 37010
  3. 35940
  4. 2503
  5. 313.6
  6. 211100
  7. 45.71
  8. 234200
  9. 48480
  10. 0.3109
  11. 23470
  12. 3711
  13. 201100
  14. 4558
  15. 0.01261
  16. 47140
  17. 2.939
  18. 306200
  19. 35440
  20. 608
  21. 32.57
  22. 0.04901
  23. 2045
  24. 124.5
  25. 0.02004
  26. 1.826
  27. 0.04942
  28. 810
  29. 0.04406
  30. 22090
  31. 0.3651
  32. 418200
  33. 496.1
  34. 5780
  35. 284.8
  36. 3.123
  37. 42960
  38. 2.79
  39. 3.802
  40. 7690

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