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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 969 · 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. 1.11.4 ÷ 100 =
  2. 2.181.5 ÷ 100 =
  3. 3.460.4 × 10 =
  4. 4.14.24 × 1000 =
  5. 5.28.9 × 10 =
  6. 6.208.1 × 1000 =
  7. 7.45.47 × 10 =
  8. 8.7.38 × 10 =
  9. 9.143.7 × 1000 =
  10. 10.462.9 × 100 =
  11. 11.428.5 × 1000 =
  12. 12.195.3 × 10 =
  13. 13.148.7 × 100 =
  14. 14.29.71 × 1000 =
  15. 15.377.2 ÷ 100 =
  16. 16.311.5 ÷ 10 =
  17. 17.48.21 × 10 =
  18. 18.421.5 × 100 =
  19. 19.439.1 ÷ 10 =
  20. 20.205.9 ÷ 10 =
  21. 21.23.19 ÷ 10 =
  22. 22.184.5 ÷ 1000 =
  23. 23.446.7 ÷ 1000 =
  24. 24.25.38 × 100 =
  25. 25.3.41 × 10 =
  26. 26.293.2 ÷ 10 =
  27. 27.336.9 × 10 =
  28. 28.142.6 ÷ 10 =
  29. 29.216.3 ÷ 10 =
  30. 30.30.3 ÷ 100 =
  31. 31.19.91 ÷ 10 =
  32. 32.271.2 × 10 =
  33. 33.404.8 × 100 =
  34. 34.376.1 × 10 =
  35. 35.11.16 × 100 =
  36. 36.41.09 ÷ 100 =
  37. 37.201.8 × 1000 =
  38. 38.43.56 ÷ 10 =
  39. 39.257.9 × 1000 =
  40. 40.19.24 × 10 =

Answer key

  1. 0.114
  2. 1.815
  3. 4604
  4. 14240
  5. 289
  6. 208100
  7. 454.7
  8. 73.8
  9. 143700
  10. 46290
  11. 428500
  12. 1953
  13. 14870
  14. 29710
  15. 3.772
  16. 31.15
  17. 482.1
  18. 42150
  19. 43.91
  20. 20.59
  21. 2.319
  22. 0.1845
  23. 0.4467
  24. 2538
  25. 34.1
  26. 29.32
  27. 3369
  28. 14.26
  29. 21.63
  30. 0.303
  31. 1.991
  32. 2712
  33. 40480
  34. 3761
  35. 1116
  36. 0.4109
  37. 201800
  38. 4.356
  39. 257900
  40. 192.4

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