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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 513 · 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. 1.102.7 × 100 =
  2. 2.208.1 × 1000 =
  3. 3.0.27 ÷ 1000 =
  4. 4.111.7 ÷ 100 =
  5. 5.17.76 ÷ 1000 =
  6. 6.10.7 ÷ 1000 =
  7. 7.210.6 ÷ 100 =
  8. 8.19.29 ÷ 1000 =
  9. 9.121.7 × 10 =
  10. 10.283.1 × 100 =
  11. 11.35.19 ÷ 1000 =
  12. 12.36.74 ÷ 100 =
  13. 13.33.1 ÷ 100 =
  14. 14.29.99 ÷ 100 =
  15. 15.118.5 ÷ 1000 =
  16. 16.435.5 × 10 =
  17. 17.292.1 × 10 =
  18. 18.478.5 ÷ 100 =
  19. 19.137.4 ÷ 10 =
  20. 20.22.57 × 10 =
  21. 21.34.04 ÷ 10 =
  22. 22.7.68 × 1000 =
  23. 23.29.51 ÷ 100 =
  24. 24.28.38 ÷ 10 =
  25. 25.6.42 ÷ 100 =
  26. 26.11.72 × 10 =
  27. 27.297.1 ÷ 100 =
  28. 28.108.1 × 100 =
  29. 29.36.71 × 10 =
  30. 30.39.72 ÷ 100 =
  31. 31.61.3 ÷ 10 =
  32. 32.499.2 ÷ 10 =
  33. 33.192.5 × 1000 =
  34. 34.86.3 × 1000 =
  35. 35.84.7 × 100 =
  36. 36.428.7 × 1000 =
  37. 37.244.4 ÷ 1000 =
  38. 38.190.3 × 1000 =
  39. 39.63.3 × 10 =
  40. 40.73.3 × 10 =

Answer key

  1. 10270
  2. 208100
  3. 0.00027
  4. 1.117
  5. 0.01776
  6. 0.0107
  7. 2.106
  8. 0.01929
  9. 1217
  10. 28310
  11. 0.03519
  12. 0.3674
  13. 0.331
  14. 0.2999
  15. 0.1185
  16. 4355
  17. 2921
  18. 4.785
  19. 13.74
  20. 225.7
  21. 3.404
  22. 7680
  23. 0.2951
  24. 2.838
  25. 0.0642
  26. 117.2
  27. 2.971
  28. 10810
  29. 367.1
  30. 0.3972
  31. 6.13
  32. 49.92
  33. 192500
  34. 86300
  35. 8470
  36. 428700
  37. 0.2444
  38. 190300
  39. 633
  40. 733

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