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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 959 · 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. 1.18.36 × 1000 =
  2. 2.7.26 × 100 =
  3. 3.20.3 × 10 =
  4. 4.42.12 × 10 =
  5. 5.46.14 × 10 =
  6. 6.27.62 × 100 =
  7. 7.198.1 ÷ 100 =
  8. 8.420.9 × 100 =
  9. 9.207.2 × 100 =
  10. 10.25.3 × 100 =
  11. 11.1.61 ÷ 10 =
  12. 12.48.51 × 1000 =
  13. 13.30.86 ÷ 10 =
  14. 14.33.58 ÷ 1000 =
  15. 15.48.05 ÷ 10 =
  16. 16.21.75 × 1000 =
  17. 17.440.8 × 1000 =
  18. 18.46.5 × 1000 =
  19. 19.496.5 × 1000 =
  20. 20.26.01 ÷ 10 =
  21. 21.261.1 ÷ 1000 =
  22. 22.27.4 ÷ 100 =
  23. 23.342.1 ÷ 1000 =
  24. 24.105.2 ÷ 10 =
  25. 25.38.12 × 100 =
  26. 26.30.33 ÷ 10 =
  27. 27.138.6 ÷ 100 =
  28. 28.11.91 ÷ 10 =
  29. 29.10.49 × 10 =
  30. 30.12.95 × 10 =
  31. 31.33.94 × 100 =
  32. 32.464.7 × 10 =
  33. 33.12.91 × 1000 =
  34. 34.43.19 × 1000 =
  35. 35.29.22 ÷ 100 =
  36. 36.41.69 ÷ 10 =
  37. 37.211.8 ÷ 100 =
  38. 38.116.5 × 1000 =
  39. 39.15.59 ÷ 1000 =
  40. 40.388.2 ÷ 100 =

Answer key

  1. 18360
  2. 726
  3. 203
  4. 421.2
  5. 461.4
  6. 2762
  7. 1.981
  8. 42090
  9. 20720
  10. 2530
  11. 0.161
  12. 48510
  13. 3.086
  14. 0.03358
  15. 4.805
  16. 21750
  17. 440800
  18. 46500
  19. 496500
  20. 2.601
  21. 0.2611
  22. 0.274
  23. 0.3421
  24. 10.52
  25. 3812
  26. 3.033
  27. 1.386
  28. 1.191
  29. 104.9
  30. 129.5
  31. 3394
  32. 4647
  33. 12910
  34. 43190
  35. 0.2922
  36. 4.169
  37. 2.118
  38. 116500
  39. 0.01559
  40. 3.882

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