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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 784 · 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. 1.32.15 × 10 =
  2. 2.14.91 ÷ 1000 =
  3. 3.1.61 × 1000 =
  4. 4.171.8 × 1000 =
  5. 5.49.27 ÷ 100 =
  6. 6.8.69 × 10 =
  7. 7.35.7 × 100 =
  8. 8.261.3 × 1000 =
  9. 9.56.1 × 1000 =
  10. 10.283.6 × 100 =
  11. 11.484.7 ÷ 1000 =
  12. 12.437.7 × 10 =
  13. 13.123.2 × 100 =
  14. 14.278.9 ÷ 100 =
  15. 15.2.24 ÷ 100 =
  16. 16.293.2 ÷ 10 =
  17. 17.439.9 ÷ 100 =
  18. 18.40.77 ÷ 10 =
  19. 19.55.7 ÷ 1000 =
  20. 20.29.7 × 10 =
  21. 21.7.27 ÷ 1000 =
  22. 22.11.71 ÷ 100 =
  23. 23.39.95 ÷ 10 =
  24. 24.6.96 ÷ 1000 =
  25. 25.476.2 × 100 =
  26. 26.49.92 ÷ 1000 =
  27. 27.3.31 ÷ 100 =
  28. 28.37.73 ÷ 1000 =
  29. 29.71.1 ÷ 100 =
  30. 30.106.2 ÷ 1000 =
  31. 31.38.71 ÷ 100 =
  32. 32.35.16 × 100 =
  33. 33.15.91 × 100 =
  34. 34.138.5 × 1000 =
  35. 35.7.09 × 10 =
  36. 36.59.1 ÷ 10 =
  37. 37.36.21 ÷ 100 =
  38. 38.28.53 × 10 =
  39. 39.330.7 × 10 =
  40. 40.2.8 ÷ 10 =

Answer key

  1. 321.5
  2. 0.01491
  3. 1610
  4. 171800
  5. 0.4927
  6. 86.9
  7. 3570
  8. 261300
  9. 56100
  10. 28360
  11. 0.4847
  12. 4377
  13. 12320
  14. 2.789
  15. 0.0224
  16. 29.32
  17. 4.399
  18. 4.077
  19. 0.0557
  20. 297
  21. 0.00727
  22. 0.1171
  23. 3.995
  24. 0.00696
  25. 47620
  26. 0.04992
  27. 0.0331
  28. 0.03773
  29. 0.711
  30. 0.1062
  31. 0.3871
  32. 3516
  33. 1591
  34. 138500
  35. 70.9
  36. 5.91
  37. 0.3621
  38. 285.3
  39. 3307
  40. 0.28

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