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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 392 · 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. 1.18.62 ÷ 100 =
  2. 2.45.45 ÷ 100 =
  3. 3.209.9 × 1000 =
  4. 4.26.35 × 1000 =
  5. 5.353.2 ÷ 100 =
  6. 6.298.6 ÷ 10 =
  7. 7.460.1 ÷ 100 =
  8. 8.22.74 × 100 =
  9. 9.43.47 ÷ 1000 =
  10. 10.430.6 ÷ 10 =
  11. 11.333.1 × 100 =
  12. 12.46.3 × 10 =
  13. 13.41.19 × 10 =
  14. 14.252.8 × 10 =
  15. 15.248.3 × 100 =
  16. 16.416.2 ÷ 100 =
  17. 17.14.59 × 10 =
  18. 18.35.41 × 1000 =
  19. 19.299.4 × 10 =
  20. 20.7.41 × 1000 =
  21. 21.43.41 × 10 =
  22. 22.465.3 ÷ 10 =
  23. 23.45.39 × 100 =
  24. 24.428.5 × 1000 =
  25. 25.13.56 × 10 =
  26. 26.29.21 × 10 =
  27. 27.198.3 × 100 =
  28. 28.458.5 ÷ 10 =
  29. 29.362.9 × 1000 =
  30. 30.257.8 ÷ 100 =
  31. 31.19.51 ÷ 100 =
  32. 32.10.24 × 10 =
  33. 33.100.3 ÷ 100 =
  34. 34.425.2 ÷ 1000 =
  35. 35.19.98 × 1000 =
  36. 36.470.1 × 1000 =
  37. 37.4.22 ÷ 1000 =
  38. 38.18.11 × 100 =
  39. 39.302.6 ÷ 10 =
  40. 40.425.1 ÷ 10 =

Answer key

  1. 0.1862
  2. 0.4545
  3. 209900
  4. 26350
  5. 3.532
  6. 29.86
  7. 4.601
  8. 2274
  9. 0.04347
  10. 43.06
  11. 33310
  12. 463
  13. 411.9
  14. 2528
  15. 24830
  16. 4.162
  17. 145.9
  18. 35410
  19. 2994
  20. 7410
  21. 434.1
  22. 46.53
  23. 4539
  24. 428500
  25. 135.6
  26. 292.1
  27. 19830
  28. 45.85
  29. 362900
  30. 2.578
  31. 0.1951
  32. 102.4
  33. 1.003
  34. 0.4252
  35. 19980
  36. 470100
  37. 0.00422
  38. 1811
  39. 30.26
  40. 42.51

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