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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 216 · 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. 1.83.2 ÷ 10 =
  2. 2.19.91 × 1000 =
  3. 3.45.01 × 10 =
  4. 4.467.2 ÷ 10 =
  5. 5.165.2 ÷ 1000 =
  6. 6.28.51 ÷ 100 =
  7. 7.208.4 × 1000 =
  8. 8.32.71 × 100 =
  9. 9.6.71 × 100 =
  10. 10.218.2 × 100 =
  11. 11.40.79 ÷ 10 =
  12. 12.378.7 ÷ 100 =
  13. 13.24.77 ÷ 100 =
  14. 14.37.74 ÷ 10 =
  15. 15.16.47 ÷ 1000 =
  16. 16.228.7 ÷ 1000 =
  17. 17.157.6 × 1000 =
  18. 18.32.6 × 10 =
  19. 19.26.31 × 100 =
  20. 20.2.79 ÷ 1000 =
  21. 21.1.02 ÷ 100 =
  22. 22.80.6 × 1000 =
  23. 23.13.87 × 10 =
  24. 24.111.4 × 100 =
  25. 25.112.8 ÷ 10 =
  26. 26.14.52 × 100 =
  27. 27.8.83 ÷ 1000 =
  28. 28.44.11 × 10 =
  29. 29.45.54 ÷ 10 =
  30. 30.39.84 × 1000 =
  31. 31.186.1 × 1000 =
  32. 32.52.5 × 100 =
  33. 33.369.4 ÷ 100 =
  34. 34.29.92 ÷ 100 =
  35. 35.126.1 × 100 =
  36. 36.24.71 × 100 =
  37. 37.306.8 × 1000 =
  38. 38.161.5 × 100 =
  39. 39.150.4 × 100 =
  40. 40.33.96 × 10 =

Answer key

  1. 8.32
  2. 19910
  3. 450.1
  4. 46.72
  5. 0.1652
  6. 0.2851
  7. 208400
  8. 3271
  9. 671
  10. 21820
  11. 4.079
  12. 3.787
  13. 0.2477
  14. 3.774
  15. 0.01647
  16. 0.2287
  17. 157600
  18. 326
  19. 2631
  20. 0.00279
  21. 0.0102
  22. 80600
  23. 138.7
  24. 11140
  25. 11.28
  26. 1452
  27. 0.00883
  28. 441.1
  29. 4.554
  30. 39840
  31. 186100
  32. 5250
  33. 3.694
  34. 0.2992
  35. 12610
  36. 2471
  37. 306800
  38. 16150
  39. 15040
  40. 339.6

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