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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 945 · 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. 1.7.39 × 100 =
  2. 2.11.96 × 100 =
  3. 3.18.13 ÷ 1000 =
  4. 4.407.8 × 1000 =
  5. 5.46.86 × 1000 =
  6. 6.8.54 ÷ 10 =
  7. 7.328.1 ÷ 100 =
  8. 8.29.85 ÷ 1000 =
  9. 9.317.9 × 10 =
  10. 10.38.85 ÷ 100 =
  11. 11.196.9 × 1000 =
  12. 12.370.8 × 1000 =
  13. 13.393.1 × 1000 =
  14. 14.230.7 × 1000 =
  15. 15.178.4 × 100 =
  16. 16.17.23 × 10 =
  17. 17.22.68 × 100 =
  18. 18.282.2 ÷ 10 =
  19. 19.364.8 ÷ 1000 =
  20. 20.112.4 × 10 =
  21. 21.26.6 ÷ 1000 =
  22. 22.1.93 ÷ 10 =
  23. 23.4.97 ÷ 10 =
  24. 24.8.27 ÷ 100 =
  25. 25.8.71 ÷ 100 =
  26. 26.13.71 ÷ 10 =
  27. 27.463.5 × 1000 =
  28. 28.35.85 × 1000 =
  29. 29.9.14 ÷ 100 =
  30. 30.360.7 ÷ 10 =
  31. 31.463.4 × 100 =
  32. 32.21.6 ÷ 100 =
  33. 33.32.85 × 10 =
  34. 34.361.9 ÷ 1000 =
  35. 35.8.15 × 100 =
  36. 36.57.8 ÷ 1000 =
  37. 37.291.6 × 1000 =
  38. 38.262.8 × 100 =
  39. 39.22.55 × 100 =
  40. 40.31.07 ÷ 100 =

Answer key

  1. 739
  2. 1196
  3. 0.01813
  4. 407800
  5. 46860
  6. 0.854
  7. 3.281
  8. 0.02985
  9. 3179
  10. 0.3885
  11. 196900
  12. 370800
  13. 393100
  14. 230700
  15. 17840
  16. 172.3
  17. 2268
  18. 28.22
  19. 0.3648
  20. 1124
  21. 0.0266
  22. 0.193
  23. 0.497
  24. 0.0827
  25. 0.0871
  26. 1.371
  27. 463500
  28. 35850
  29. 0.0914
  30. 36.07
  31. 46340
  32. 0.216
  33. 328.5
  34. 0.3619
  35. 815
  36. 0.0578
  37. 291600
  38. 26280
  39. 2255
  40. 0.3107

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