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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 965 · 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. 1.22.11 × 10 =
  2. 2.45.28 ÷ 10 =
  3. 3.16.71 × 1000 =
  4. 4.359.3 ÷ 100 =
  5. 5.23.52 ÷ 10 =
  6. 6.294.6 × 100 =
  7. 7.42.5 × 100 =
  8. 8.31.24 ÷ 10 =
  9. 9.6.58 ÷ 10 =
  10. 10.236.8 ÷ 100 =
  11. 11.147.3 ÷ 10 =
  12. 12.413.6 ÷ 10 =
  13. 13.235.3 ÷ 1000 =
  14. 14.21.28 × 1000 =
  15. 15.72.5 ÷ 10 =
  16. 16.27.26 × 1000 =
  17. 17.446.1 × 10 =
  18. 18.99.2 ÷ 100 =
  19. 19.39.82 ÷ 1000 =
  20. 20.21.03 × 1000 =
  21. 21.278.7 ÷ 100 =
  22. 22.22.18 × 1000 =
  23. 23.90.9 ÷ 1000 =
  24. 24.16.92 × 1000 =
  25. 25.17.25 × 100 =
  26. 26.6.05 × 10 =
  27. 27.46.61 × 1000 =
  28. 28.85.2 ÷ 1000 =
  29. 29.417.1 ÷ 10 =
  30. 30.19.58 × 100 =
  31. 31.152.2 × 100 =
  32. 32.18.27 ÷ 100 =
  33. 33.138.5 × 10 =
  34. 34.33.71 ÷ 1000 =
  35. 35.32.8 ÷ 1000 =
  36. 36.369.6 ÷ 10 =
  37. 37.492.2 ÷ 100 =
  38. 38.5.63 × 1000 =
  39. 39.29.34 × 10 =
  40. 40.47.27 × 10 =

Answer key

  1. 221.1
  2. 4.528
  3. 16710
  4. 3.593
  5. 2.352
  6. 29460
  7. 4250
  8. 3.124
  9. 0.658
  10. 2.368
  11. 14.73
  12. 41.36
  13. 0.2353
  14. 21280
  15. 7.25
  16. 27260
  17. 4461
  18. 0.992
  19. 0.03982
  20. 21030
  21. 2.787
  22. 22180
  23. 0.0909
  24. 16920
  25. 1725
  26. 60.5
  27. 46610
  28. 0.0852
  29. 41.71
  30. 1958
  31. 15220
  32. 0.1827
  33. 1385
  34. 0.03371
  35. 0.0328
  36. 36.96
  37. 4.922
  38. 5630
  39. 293.4
  40. 472.7

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