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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 918 · 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. 1.223.1 ÷ 100 =
  2. 2.32.11 ÷ 1000 =
  3. 3.33.09 × 100 =
  4. 4.25.28 ÷ 1000 =
  5. 5.333.5 ÷ 1000 =
  6. 6.184.3 × 1000 =
  7. 7.167.1 × 10 =
  8. 8.16.99 × 100 =
  9. 9.45.86 ÷ 1000 =
  10. 10.154.4 × 10 =
  11. 11.182.1 ÷ 10 =
  12. 12.56.4 × 100 =
  13. 13.496.1 × 100 =
  14. 14.5.16 ÷ 10 =
  15. 15.59.8 × 10 =
  16. 16.13.05 × 1000 =
  17. 17.33.14 × 10 =
  18. 18.47.66 ÷ 1000 =
  19. 19.181.3 ÷ 1000 =
  20. 20.219.1 ÷ 10 =
  21. 21.330.1 ÷ 100 =
  22. 22.23.84 × 1000 =
  23. 23.35.25 × 10 =
  24. 24.245.6 ÷ 1000 =
  25. 25.69.2 ÷ 10 =
  26. 26.6.41 × 10 =
  27. 27.256.4 ÷ 100 =
  28. 28.30.81 ÷ 10 =
  29. 29.360.1 × 100 =
  30. 30.419.4 × 10 =
  31. 31.14.9 × 10 =
  32. 32.194.9 × 10 =
  33. 33.29.22 ÷ 100 =
  34. 34.468.9 × 10 =
  35. 35.412.6 × 100 =
  36. 36.36.1 × 1000 =
  37. 37.3.41 × 100 =
  38. 38.32.29 × 10 =
  39. 39.24.61 ÷ 10 =
  40. 40.155.2 ÷ 1000 =

Answer key

  1. 2.231
  2. 0.03211
  3. 3309
  4. 0.02528
  5. 0.3335
  6. 184300
  7. 1671
  8. 1699
  9. 0.04586
  10. 1544
  11. 18.21
  12. 5640
  13. 49610
  14. 0.516
  15. 598
  16. 13050
  17. 331.4
  18. 0.04766
  19. 0.1813
  20. 21.91
  21. 3.301
  22. 23840
  23. 352.5
  24. 0.2456
  25. 6.92
  26. 64.1
  27. 2.564
  28. 3.081
  29. 36010
  30. 4194
  31. 149
  32. 1949
  33. 0.2922
  34. 4689
  35. 41260
  36. 36100
  37. 341
  38. 322.9
  39. 2.461
  40. 0.1552

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