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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 468 · 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. 1.216.1 × 100 =
  2. 2.33.33 ÷ 100 =
  3. 3.209.1 ÷ 10 =
  4. 4.38.46 ÷ 10 =
  5. 5.36.74 × 10 =
  6. 6.9.75 × 100 =
  7. 7.19.69 ÷ 1000 =
  8. 8.325.6 × 100 =
  9. 9.335.8 × 1000 =
  10. 10.5.39 ÷ 100 =
  11. 11.22.13 ÷ 100 =
  12. 12.327.8 ÷ 10 =
  13. 13.407.2 ÷ 1000 =
  14. 14.313.9 × 10 =
  15. 15.466.6 ÷ 10 =
  16. 16.10.24 × 1000 =
  17. 17.43.1 × 10 =
  18. 18.349.8 ÷ 100 =
  19. 19.39.41 × 100 =
  20. 20.26.4 ÷ 10 =
  21. 21.265.8 ÷ 10 =
  22. 22.21.7 × 10 =
  23. 23.35.96 ÷ 10 =
  24. 24.67.2 × 100 =
  25. 25.152.1 ÷ 10 =
  26. 26.25.13 × 10 =
  27. 27.1.61 × 10 =
  28. 28.32.91 × 1000 =
  29. 29.303.4 ÷ 100 =
  30. 30.491.4 ÷ 100 =
  31. 31.158.5 × 1000 =
  32. 32.14.66 ÷ 1000 =
  33. 33.45.19 × 100 =
  34. 34.6.24 × 10 =
  35. 35.72.1 ÷ 100 =
  36. 36.52.1 × 1000 =
  37. 37.12.8 × 100 =
  38. 38.120.1 ÷ 1000 =
  39. 39.160.3 × 100 =
  40. 40.4.48 × 10 =

Answer key

  1. 21610
  2. 0.3333
  3. 20.91
  4. 3.846
  5. 367.4
  6. 975
  7. 0.01969
  8. 32560
  9. 335800
  10. 0.0539
  11. 0.2213
  12. 32.78
  13. 0.4072
  14. 3139
  15. 46.66
  16. 10240
  17. 431
  18. 3.498
  19. 3941
  20. 2.64
  21. 26.58
  22. 217
  23. 3.596
  24. 6720
  25. 15.21
  26. 251.3
  27. 16.1
  28. 32910
  29. 3.034
  30. 4.914
  31. 158500
  32. 0.01466
  33. 4519
  34. 62.4
  35. 0.721
  36. 52100
  37. 1280
  38. 0.1201
  39. 16030
  40. 44.8

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