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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 67 · 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. 1.339.9 ÷ 1000 =
  2. 2.100.9 × 100 =
  3. 3.325.2 × 100 =
  4. 4.29.38 ÷ 10 =
  5. 5.165.1 × 1000 =
  6. 6.26.52 × 10 =
  7. 7.16.03 ÷ 1000 =
  8. 8.6.99 × 100 =
  9. 9.48.96 × 1000 =
  10. 10.3.55 × 10 =
  11. 11.4.62 ÷ 1000 =
  12. 12.32.77 × 10 =
  13. 13.16.22 × 1000 =
  14. 14.325.9 × 10 =
  15. 15.37.01 ÷ 1000 =
  16. 16.166.1 × 1000 =
  17. 17.36.31 × 100 =
  18. 18.19.75 × 100 =
  19. 19.359.5 × 1000 =
  20. 20.18.17 × 1000 =
  21. 21.41.25 ÷ 10 =
  22. 22.6.89 × 100 =
  23. 23.407.1 ÷ 10 =
  24. 24.3.03 × 10 =
  25. 25.43.8 × 100 =
  26. 26.138.4 × 10 =
  27. 27.414.9 ÷ 1000 =
  28. 28.404.5 × 100 =
  29. 29.12.23 × 1000 =
  30. 30.35.7 ÷ 10 =
  31. 31.26.32 × 10 =
  32. 32.217.8 ÷ 1000 =
  33. 33.396.8 × 1000 =
  34. 34.282.5 × 10 =
  35. 35.482.4 × 1000 =
  36. 36.13.38 ÷ 100 =
  37. 37.421.9 ÷ 100 =
  38. 38.283.9 × 10 =
  39. 39.225.5 ÷ 100 =
  40. 40.52.1 × 100 =

Answer key

  1. 0.3399
  2. 10090
  3. 32520
  4. 2.938
  5. 165100
  6. 265.2
  7. 0.01603
  8. 699
  9. 48960
  10. 35.5
  11. 0.00462
  12. 327.7
  13. 16220
  14. 3259
  15. 0.03701
  16. 166100
  17. 3631
  18. 1975
  19. 359500
  20. 18170
  21. 4.125
  22. 689
  23. 40.71
  24. 30.3
  25. 4380
  26. 1384
  27. 0.4149
  28. 40450
  29. 12230
  30. 3.57
  31. 263.2
  32. 0.2178
  33. 396800
  34. 2825
  35. 482400
  36. 0.1338
  37. 4.219
  38. 2839
  39. 2.255
  40. 5210

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