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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 660 · 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. 1.30.62 × 10 =
  2. 2.290.1 ÷ 100 =
  3. 3.53.1 × 100 =
  4. 4.61.1 ÷ 10 =
  5. 5.22.8 × 1000 =
  6. 6.31.29 ÷ 10 =
  7. 7.44.5 ÷ 10 =
  8. 8.148.9 ÷ 100 =
  9. 9.88.2 ÷ 10 =
  10. 10.493.9 × 10 =
  11. 11.73.6 × 10 =
  12. 12.7.3 × 100 =
  13. 13.0.59 ÷ 1000 =
  14. 14.16.28 ÷ 100 =
  15. 15.150.1 ÷ 100 =
  16. 16.44.04 × 1000 =
  17. 17.337.1 ÷ 10 =
  18. 18.8.6 ÷ 1000 =
  19. 19.5.51 × 100 =
  20. 20.272.7 × 1000 =
  21. 21.34.96 × 100 =
  22. 22.21.78 × 100 =
  23. 23.84.6 × 10 =
  24. 24.1.9 ÷ 10 =
  25. 25.9.78 × 10 =
  26. 26.35.12 × 100 =
  27. 27.9.94 × 100 =
  28. 28.86.3 × 1000 =
  29. 29.48.96 × 10 =
  30. 30.253.6 × 1000 =
  31. 31.172.1 × 10 =
  32. 32.9.4 ÷ 10 =
  33. 33.225.8 × 1000 =
  34. 34.419.5 ÷ 1000 =
  35. 35.245.3 × 1000 =
  36. 36.21.43 ÷ 1000 =
  37. 37.373.2 × 100 =
  38. 38.22.08 × 1000 =
  39. 39.397.2 ÷ 10 =
  40. 40.205.6 × 10 =

Answer key

  1. 306.2
  2. 2.901
  3. 5310
  4. 6.11
  5. 22800
  6. 3.129
  7. 4.45
  8. 1.489
  9. 8.82
  10. 4939
  11. 736
  12. 730
  13. 0.00059
  14. 0.1628
  15. 1.501
  16. 44040
  17. 33.71
  18. 0.0086
  19. 551
  20. 272700
  21. 3496
  22. 2178
  23. 846
  24. 0.19
  25. 97.8
  26. 3512
  27. 994
  28. 86300
  29. 489.6
  30. 253600
  31. 1721
  32. 0.94
  33. 225800
  34. 0.4195
  35. 245300
  36. 0.02143
  37. 37320
  38. 22080
  39. 39.72
  40. 2056

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