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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 110 · 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. 1.157.4 ÷ 10 =
  2. 2.408.1 × 1000 =
  3. 3.206.9 × 1000 =
  4. 4.9.64 × 100 =
  5. 5.43.93 × 1000 =
  6. 6.48.77 ÷ 10 =
  7. 7.193.8 ÷ 1000 =
  8. 8.18.37 × 10 =
  9. 9.17.56 ÷ 100 =
  10. 10.2.34 ÷ 1000 =
  11. 11.14.29 × 1000 =
  12. 12.47.46 × 10 =
  13. 13.28.47 ÷ 100 =
  14. 14.8.69 ÷ 1000 =
  15. 15.8.11 × 1000 =
  16. 16.112.6 × 10 =
  17. 17.27.81 ÷ 100 =
  18. 18.352.1 ÷ 1000 =
  19. 19.251.9 ÷ 10 =
  20. 20.323.4 × 100 =
  21. 21.36.84 ÷ 100 =
  22. 22.11.15 × 100 =
  23. 23.97.9 × 10 =
  24. 24.275.1 ÷ 10 =
  25. 25.76.6 × 10 =
  26. 26.170.2 × 10 =
  27. 27.29.38 × 1000 =
  28. 28.46.6 × 10 =
  29. 29.12.06 ÷ 10 =
  30. 30.66.3 × 10 =
  31. 31.29.48 ÷ 10 =
  32. 32.19.64 × 10 =
  33. 33.54.6 × 10 =
  34. 34.0.52 ÷ 1000 =
  35. 35.15.21 × 1000 =
  36. 36.247.7 × 10 =
  37. 37.179.8 × 10 =
  38. 38.24.08 × 100 =
  39. 39.47.9 × 1000 =
  40. 40.8.97 × 1000 =

Answer key

  1. 15.74
  2. 408100
  3. 206900
  4. 964
  5. 43930
  6. 4.877
  7. 0.1938
  8. 183.7
  9. 0.1756
  10. 0.00234
  11. 14290
  12. 474.6
  13. 0.2847
  14. 0.00869
  15. 8110
  16. 1126
  17. 0.2781
  18. 0.3521
  19. 25.19
  20. 32340
  21. 0.3684
  22. 1115
  23. 979
  24. 27.51
  25. 766
  26. 1702
  27. 29380
  28. 466
  29. 1.206
  30. 663
  31. 2.948
  32. 196.4
  33. 546
  34. 0.00052
  35. 15210
  36. 2477
  37. 1798
  38. 2408
  39. 47900
  40. 8970

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