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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 234 · 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. 1.6.16 ÷ 1000 =
  2. 2.23.46 ÷ 100 =
  3. 3.41.52 ÷ 10 =
  4. 4.101.1 × 1000 =
  5. 5.25.14 × 10 =
  6. 6.338.5 ÷ 1000 =
  7. 7.21.31 ÷ 1000 =
  8. 8.1.44 ÷ 100 =
  9. 9.12.39 × 100 =
  10. 10.3.82 × 1000 =
  11. 11.29.13 ÷ 1000 =
  12. 12.42.93 ÷ 1000 =
  13. 13.19.19 × 1000 =
  14. 14.62.2 × 1000 =
  15. 15.340.6 ÷ 100 =
  16. 16.45.13 × 1000 =
  17. 17.20.95 ÷ 1000 =
  18. 18.24.9 × 1000 =
  19. 19.17.03 ÷ 100 =
  20. 20.17.46 × 10 =
  21. 21.4.88 ÷ 1000 =
  22. 22.428.9 ÷ 10 =
  23. 23.118.4 × 10 =
  24. 24.18.31 ÷ 10 =
  25. 25.280.9 ÷ 1000 =
  26. 26.36.32 × 10 =
  27. 27.48.02 × 1000 =
  28. 28.46.01 ÷ 10 =
  29. 29.327.7 ÷ 100 =
  30. 30.19.24 × 1000 =
  31. 31.288.6 × 10 =
  32. 32.4.11 × 100 =
  33. 33.482.2 × 1000 =
  34. 34.0.69 ÷ 10 =
  35. 35.41.25 ÷ 10 =
  36. 36.64.7 ÷ 100 =
  37. 37.24.68 × 10 =
  38. 38.416.3 × 10 =
  39. 39.184.9 ÷ 10 =
  40. 40.100.1 × 100 =

Answer key

  1. 0.00616
  2. 0.2346
  3. 4.152
  4. 101100
  5. 251.4
  6. 0.3385
  7. 0.02131
  8. 0.0144
  9. 1239
  10. 3820
  11. 0.02913
  12. 0.04293
  13. 19190
  14. 62200
  15. 3.406
  16. 45130
  17. 0.02095
  18. 24900
  19. 0.1703
  20. 174.6
  21. 0.00488
  22. 42.89
  23. 1184
  24. 1.831
  25. 0.2809
  26. 363.2
  27. 48020
  28. 4.601
  29. 3.277
  30. 19240
  31. 2886
  32. 411
  33. 482200
  34. 0.069
  35. 4.125
  36. 0.647
  37. 246.8
  38. 4163
  39. 18.49
  40. 10010

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