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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 437 · 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. 1.37.43 × 1000 =
  2. 2.25.39 × 100 =
  3. 3.41.41 ÷ 10 =
  4. 4.4.29 × 1000 =
  5. 5.482.7 × 100 =
  6. 6.13.34 × 100 =
  7. 7.38.8 ÷ 100 =
  8. 8.497.8 × 100 =
  9. 9.77.3 ÷ 1000 =
  10. 10.199.7 ÷ 10 =
  11. 11.9.3 × 1000 =
  12. 12.443.3 × 1000 =
  13. 13.22.08 × 10 =
  14. 14.373.5 ÷ 10 =
  15. 15.23.12 × 100 =
  16. 16.28.36 × 100 =
  17. 17.37.97 × 10 =
  18. 18.42.46 ÷ 1000 =
  19. 19.6.42 ÷ 100 =
  20. 20.18.53 ÷ 1000 =
  21. 21.197.7 × 10 =
  22. 22.12.52 × 100 =
  23. 23.23.3 × 1000 =
  24. 24.46.5 × 1000 =
  25. 25.4.91 × 10 =
  26. 26.172.6 × 1000 =
  27. 27.292.3 ÷ 10 =
  28. 28.238.5 ÷ 10 =
  29. 29.64.9 ÷ 10 =
  30. 30.250.1 ÷ 100 =
  31. 31.29.53 × 1000 =
  32. 32.39.39 × 100 =
  33. 33.202.4 × 100 =
  34. 34.38.2 × 100 =
  35. 35.309.6 × 10 =
  36. 36.272.1 ÷ 100 =
  37. 37.215.9 ÷ 100 =
  38. 38.5.71 × 10 =
  39. 39.237.1 ÷ 10 =
  40. 40.183.5 × 10 =

Answer key

  1. 37430
  2. 2539
  3. 4.141
  4. 4290
  5. 48270
  6. 1334
  7. 0.388
  8. 49780
  9. 0.0773
  10. 19.97
  11. 9300
  12. 443300
  13. 220.8
  14. 37.35
  15. 2312
  16. 2836
  17. 379.7
  18. 0.04246
  19. 0.0642
  20. 0.01853
  21. 1977
  22. 1252
  23. 23300
  24. 46500
  25. 49.1
  26. 172600
  27. 29.23
  28. 23.85
  29. 6.49
  30. 2.501
  31. 29530
  32. 3939
  33. 20240
  34. 3820
  35. 3096
  36. 2.721
  37. 2.159
  38. 57.1
  39. 23.71
  40. 1835

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