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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 610 · 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. 1.21.01 ÷ 100 =
  2. 2.12.47 × 10 =
  3. 3.358.1 × 100 =
  4. 4.14.67 × 10 =
  5. 5.204.7 × 100 =
  6. 6.14.92 × 100 =
  7. 7.5.87 × 10 =
  8. 8.4.8 × 10 =
  9. 9.14.01 ÷ 10 =
  10. 10.122.2 × 100 =
  11. 11.12.86 × 100 =
  12. 12.212.4 × 10 =
  13. 13.45.97 × 1000 =
  14. 14.8.78 ÷ 10 =
  15. 15.314.3 × 1000 =
  16. 16.8.86 × 100 =
  17. 17.160.8 ÷ 1000 =
  18. 18.35.27 × 1000 =
  19. 19.85.7 × 100 =
  20. 20.21.4 ÷ 10 =
  21. 21.99.7 × 1000 =
  22. 22.22.86 ÷ 1000 =
  23. 23.440.1 ÷ 100 =
  24. 24.37.31 ÷ 100 =
  25. 25.125.1 × 1000 =
  26. 26.410.5 × 100 =
  27. 27.43.5 × 10 =
  28. 28.325.5 × 1000 =
  29. 29.265.1 ÷ 10 =
  30. 30.96.1 ÷ 1000 =
  31. 31.49.88 × 100 =
  32. 32.20.61 × 100 =
  33. 33.13.71 × 10 =
  34. 34.483.8 ÷ 10 =
  35. 35.10.73 ÷ 10 =
  36. 36.421.4 ÷ 10 =
  37. 37.140.9 × 100 =
  38. 38.36.6 × 10 =
  39. 39.367.2 × 1000 =
  40. 40.311.2 × 1000 =

Answer key

  1. 0.2101
  2. 124.7
  3. 35810
  4. 146.7
  5. 20470
  6. 1492
  7. 58.7
  8. 48
  9. 1.401
  10. 12220
  11. 1286
  12. 2124
  13. 45970
  14. 0.878
  15. 314300
  16. 886
  17. 0.1608
  18. 35270
  19. 8570
  20. 2.14
  21. 99700
  22. 0.02286
  23. 4.401
  24. 0.3731
  25. 125100
  26. 41050
  27. 435
  28. 325500
  29. 26.51
  30. 0.0961
  31. 4988
  32. 2061
  33. 137.1
  34. 48.38
  35. 1.073
  36. 42.14
  37. 14090
  38. 366
  39. 367200
  40. 311200

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