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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 886 · 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. 1.373.2 × 10 =
  2. 2.36.4 ÷ 100 =
  3. 3.24.84 ÷ 100 =
  4. 4.15.8 ÷ 10 =
  5. 5.17.34 × 1000 =
  6. 6.269.1 ÷ 100 =
  7. 7.28.65 × 1000 =
  8. 8.22.42 × 10 =
  9. 9.322.9 ÷ 10 =
  10. 10.167.1 × 10 =
  11. 11.12.15 ÷ 100 =
  12. 12.438.7 ÷ 1000 =
  13. 13.177.6 ÷ 1000 =
  14. 14.88.3 × 10 =
  15. 15.93.9 ÷ 10 =
  16. 16.11.8 ÷ 1000 =
  17. 17.15.49 ÷ 100 =
  18. 18.12.35 ÷ 1000 =
  19. 19.69.5 × 100 =
  20. 20.328.8 × 1000 =
  21. 21.13.14 × 1000 =
  22. 22.10.39 × 100 =
  23. 23.124.6 ÷ 10 =
  24. 24.87.1 × 10 =
  25. 25.437.6 ÷ 1000 =
  26. 26.48.79 × 100 =
  27. 27.6.92 × 1000 =
  28. 28.29.7 ÷ 10 =
  29. 29.279.4 × 10 =
  30. 30.255.1 ÷ 100 =
  31. 31.36.2 × 1000 =
  32. 32.46.72 × 1000 =
  33. 33.26.44 × 10 =
  34. 34.158.5 ÷ 1000 =
  35. 35.7.78 ÷ 1000 =
  36. 36.23.63 × 10 =
  37. 37.11.22 × 1000 =
  38. 38.15.22 × 10 =
  39. 39.185.5 × 10 =
  40. 40.38.75 × 1000 =

Answer key

  1. 3732
  2. 0.364
  3. 0.2484
  4. 1.58
  5. 17340
  6. 2.691
  7. 28650
  8. 224.2
  9. 32.29
  10. 1671
  11. 0.1215
  12. 0.4387
  13. 0.1776
  14. 883
  15. 9.39
  16. 0.0118
  17. 0.1549
  18. 0.01235
  19. 6950
  20. 328800
  21. 13140
  22. 1039
  23. 12.46
  24. 871
  25. 0.4376
  26. 4879
  27. 6920
  28. 2.97
  29. 2794
  30. 2.551
  31. 36200
  32. 46720
  33. 264.4
  34. 0.1585
  35. 0.00778
  36. 236.3
  37. 11220
  38. 152.2
  39. 1855
  40. 38750

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