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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 33 · 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. 1.310.5 ÷ 1000 =
  2. 2.321.3 × 1000 =
  3. 3.27.24 × 1000 =
  4. 4.180.5 ÷ 10 =
  5. 5.22.09 × 1000 =
  6. 6.172.8 × 100 =
  7. 7.10.75 ÷ 10 =
  8. 8.71.2 ÷ 1000 =
  9. 9.372.2 ÷ 10 =
  10. 10.389.2 × 100 =
  11. 11.18.94 × 10 =
  12. 12.26.9 × 100 =
  13. 13.45.01 × 1000 =
  14. 14.26.3 × 1000 =
  15. 15.187.3 ÷ 10 =
  16. 16.315.1 ÷ 10 =
  17. 17.9.01 ÷ 1000 =
  18. 18.221.1 ÷ 10 =
  19. 19.30.1 ÷ 100 =
  20. 20.8.43 × 100 =
  21. 21.8.11 × 1000 =
  22. 22.437.6 ÷ 1000 =
  23. 23.421.3 ÷ 1000 =
  24. 24.30.21 ÷ 100 =
  25. 25.20.09 × 10 =
  26. 26.20.59 ÷ 10 =
  27. 27.376.4 × 1000 =
  28. 28.15.44 × 100 =
  29. 29.151.7 ÷ 100 =
  30. 30.16.57 ÷ 10 =
  31. 31.8.56 × 100 =
  32. 32.371.1 × 1000 =
  33. 33.25.06 × 1000 =
  34. 34.102.9 × 1000 =
  35. 35.10.49 × 10 =
  36. 36.26.95 × 10 =
  37. 37.3.6 ÷ 100 =
  38. 38.1.35 × 100 =
  39. 39.38.51 ÷ 100 =
  40. 40.37.14 × 10 =

Answer key

  1. 0.3105
  2. 321300
  3. 27240
  4. 18.05
  5. 22090
  6. 17280
  7. 1.075
  8. 0.0712
  9. 37.22
  10. 38920
  11. 189.4
  12. 2690
  13. 45010
  14. 26300
  15. 18.73
  16. 31.51
  17. 0.00901
  18. 22.11
  19. 0.301
  20. 843
  21. 8110
  22. 0.4376
  23. 0.4213
  24. 0.3021
  25. 200.9
  26. 2.059
  27. 376400
  28. 1544
  29. 1.517
  30. 1.657
  31. 856
  32. 371100
  33. 25060
  34. 102900
  35. 104.9
  36. 269.5
  37. 0.036
  38. 135
  39. 0.3851
  40. 371.4

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