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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 400 · 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. 1.27.46 × 10 =
  2. 2.44.83 × 100 =
  3. 3.10.3 ÷ 10 =
  4. 4.250.1 ÷ 100 =
  5. 5.96.4 ÷ 1000 =
  6. 6.19.03 × 1000 =
  7. 7.23.23 ÷ 10 =
  8. 8.479.5 × 10 =
  9. 9.49.91 ÷ 100 =
  10. 10.40.8 ÷ 100 =
  11. 11.6.82 × 100 =
  12. 12.128.5 × 10 =
  13. 13.29.52 ÷ 100 =
  14. 14.45.71 × 1000 =
  15. 15.3.59 ÷ 1000 =
  16. 16.1.12 × 100 =
  17. 17.458.9 × 10 =
  18. 18.386.9 × 100 =
  19. 19.182.4 × 1000 =
  20. 20.6.31 ÷ 10 =
  21. 21.12.83 ÷ 1000 =
  22. 22.492.1 × 1000 =
  23. 23.47.82 × 10 =
  24. 24.16.11 ÷ 100 =
  25. 25.461.8 × 1000 =
  26. 26.13.79 ÷ 1000 =
  27. 27.335.1 × 10 =
  28. 28.25.59 × 10 =
  29. 29.9.67 × 100 =
  30. 30.94.5 ÷ 1000 =
  31. 31.41.6 × 10 =
  32. 32.236.8 × 10 =
  33. 33.6.83 × 10 =
  34. 34.31.11 × 100 =
  35. 35.227.5 × 1000 =
  36. 36.420.6 × 1000 =
  37. 37.38.8 ÷ 100 =
  38. 38.17.99 ÷ 100 =
  39. 39.249.9 ÷ 10 =
  40. 40.8.19 × 100 =

Answer key

  1. 274.6
  2. 4483
  3. 1.03
  4. 2.501
  5. 0.0964
  6. 19030
  7. 2.323
  8. 4795
  9. 0.4991
  10. 0.408
  11. 682
  12. 1285
  13. 0.2952
  14. 45710
  15. 0.00359
  16. 112
  17. 4589
  18. 38690
  19. 182400
  20. 0.631
  21. 0.01283
  22. 492100
  23. 478.2
  24. 0.1611
  25. 461800
  26. 0.01379
  27. 3351
  28. 255.9
  29. 967
  30. 0.0945
  31. 416
  32. 2368
  33. 68.3
  34. 3111
  35. 227500
  36. 420600
  37. 0.388
  38. 0.1799
  39. 24.99
  40. 819

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