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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 78 · 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. 1.30.57 ÷ 10 =
  2. 2.123.9 × 100 =
  3. 3.133.3 × 10 =
  4. 4.15.63 ÷ 1000 =
  5. 5.445.2 × 100 =
  6. 6.405.6 ÷ 1000 =
  7. 7.66.2 × 100 =
  8. 8.8.26 × 10 =
  9. 9.48.99 × 1000 =
  10. 10.31.39 ÷ 100 =
  11. 11.110.4 × 10 =
  12. 12.32.06 ÷ 100 =
  13. 13.10.22 ÷ 1000 =
  14. 14.41.67 × 100 =
  15. 15.52.2 × 1000 =
  16. 16.7.91 ÷ 1000 =
  17. 17.7.21 ÷ 10 =
  18. 18.11.91 ÷ 10 =
  19. 19.25.36 × 10 =
  20. 20.173.7 ÷ 1000 =
  21. 21.159.3 ÷ 1000 =
  22. 22.15.31 × 10 =
  23. 23.275.4 ÷ 10 =
  24. 24.333.2 × 10 =
  25. 25.0.69 × 1000 =
  26. 26.264.6 × 100 =
  27. 27.28.38 × 100 =
  28. 28.38.73 ÷ 1000 =
  29. 29.39.9 ÷ 10 =
  30. 30.195.3 × 100 =
  31. 31.2.63 × 10 =
  32. 32.346.4 ÷ 100 =
  33. 33.369.5 ÷ 10 =
  34. 34.15.85 ÷ 10 =
  35. 35.391.1 × 100 =
  36. 36.16.36 ÷ 1000 =
  37. 37.379.7 ÷ 10 =
  38. 38.205.8 × 10 =
  39. 39.17.65 × 1000 =
  40. 40.6.45 × 10 =

Answer key

  1. 3.057
  2. 12390
  3. 1333
  4. 0.01563
  5. 44520
  6. 0.4056
  7. 6620
  8. 82.6
  9. 48990
  10. 0.3139
  11. 1104
  12. 0.3206
  13. 0.01022
  14. 4167
  15. 52200
  16. 0.00791
  17. 0.721
  18. 1.191
  19. 253.6
  20. 0.1737
  21. 0.1593
  22. 153.1
  23. 27.54
  24. 3332
  25. 690
  26. 26460
  27. 2838
  28. 0.03873
  29. 3.99
  30. 19530
  31. 26.3
  32. 3.464
  33. 36.95
  34. 1.585
  35. 39110
  36. 0.01636
  37. 37.97
  38. 2058
  39. 17650
  40. 64.5

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