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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 343 · 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. 1.47.9 × 10 =
  2. 2.250.7 × 1000 =
  3. 3.15.58 × 1000 =
  4. 4.20.09 × 1000 =
  5. 5.11.85 ÷ 1000 =
  6. 6.147.7 × 10 =
  7. 7.150.1 ÷ 1000 =
  8. 8.39.41 × 10 =
  9. 9.23.31 × 100 =
  10. 10.24.76 × 1000 =
  11. 11.67.3 × 10 =
  12. 12.27.09 × 10 =
  13. 13.42.21 × 100 =
  14. 14.2.2 ÷ 10 =
  15. 15.409.3 ÷ 100 =
  16. 16.474.1 × 100 =
  17. 17.40.43 ÷ 100 =
  18. 18.491.9 ÷ 1000 =
  19. 19.43.16 × 1000 =
  20. 20.10.42 × 1000 =
  21. 21.212.9 ÷ 100 =
  22. 22.184.9 × 100 =
  23. 23.388.3 ÷ 100 =
  24. 24.481.4 ÷ 100 =
  25. 25.107.5 ÷ 1000 =
  26. 26.46.14 × 1000 =
  27. 27.39.53 ÷ 1000 =
  28. 28.6.98 × 10 =
  29. 29.37.28 ÷ 10 =
  30. 30.12.94 × 10 =
  31. 31.13.75 × 100 =
  32. 32.423.9 × 10 =
  33. 33.129.6 ÷ 1000 =
  34. 34.182.1 ÷ 1000 =
  35. 35.465.9 × 100 =
  36. 36.200.8 × 1000 =
  37. 37.20.64 ÷ 10 =
  38. 38.17.42 × 100 =
  39. 39.432.4 × 1000 =
  40. 40.11.72 × 10 =

Answer key

  1. 479
  2. 250700
  3. 15580
  4. 20090
  5. 0.01185
  6. 1477
  7. 0.1501
  8. 394.1
  9. 2331
  10. 24760
  11. 673
  12. 270.9
  13. 4221
  14. 0.22
  15. 4.093
  16. 47410
  17. 0.4043
  18. 0.4919
  19. 43160
  20. 10420
  21. 2.129
  22. 18490
  23. 3.883
  24. 4.814
  25. 0.1075
  26. 46140
  27. 0.03953
  28. 69.8
  29. 3.728
  30. 129.4
  31. 1375
  32. 4239
  33. 0.1296
  34. 0.1821
  35. 46590
  36. 200800
  37. 2.064
  38. 1742
  39. 432400
  40. 117.2

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