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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 215 · 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. 1.157.6 ÷ 1000 =
  2. 2.18.45 ÷ 100 =
  3. 3.8.67 × 10 =
  4. 4.459.9 ÷ 100 =
  5. 5.9.7 ÷ 10 =
  6. 6.99.8 × 10 =
  7. 7.21.31 ÷ 1000 =
  8. 8.21.7 × 10 =
  9. 9.399.2 × 100 =
  10. 10.474.8 ÷ 100 =
  11. 11.149.3 ÷ 1000 =
  12. 12.64.9 × 10 =
  13. 13.41.98 × 100 =
  14. 14.43.6 × 1000 =
  15. 15.56.9 × 1000 =
  16. 16.145.5 × 10 =
  17. 17.30.01 ÷ 100 =
  18. 18.17.35 ÷ 1000 =
  19. 19.9.13 × 10 =
  20. 20.29.51 × 100 =
  21. 21.65.9 × 1000 =
  22. 22.0.42 × 1000 =
  23. 23.487.7 ÷ 1000 =
  24. 24.141.1 × 10 =
  25. 25.27.4 ÷ 10 =
  26. 26.6.62 ÷ 100 =
  27. 27.439.8 × 10 =
  28. 28.40.36 × 100 =
  29. 29.97.7 ÷ 10 =
  30. 30.49.42 ÷ 10 =
  31. 31.169.4 × 10 =
  32. 32.90.6 ÷ 100 =
  33. 33.33.84 × 100 =
  34. 34.130.1 ÷ 10 =
  35. 35.7.72 × 1000 =
  36. 36.23.98 ÷ 100 =
  37. 37.38.13 ÷ 100 =
  38. 38.420.2 ÷ 10 =
  39. 39.22.28 × 10 =
  40. 40.154.7 × 10 =

Answer key

  1. 0.1576
  2. 0.1845
  3. 86.7
  4. 4.599
  5. 0.97
  6. 998
  7. 0.02131
  8. 217
  9. 39920
  10. 4.748
  11. 0.1493
  12. 649
  13. 4198
  14. 43600
  15. 56900
  16. 1455
  17. 0.3001
  18. 0.01735
  19. 91.3
  20. 2951
  21. 65900
  22. 420
  23. 0.4877
  24. 1411
  25. 2.74
  26. 0.0662
  27. 4398
  28. 4036
  29. 9.77
  30. 4.942
  31. 1694
  32. 0.906
  33. 3384
  34. 13.01
  35. 7720
  36. 0.2398
  37. 0.3813
  38. 42.02
  39. 222.8
  40. 1547

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