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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 409 · 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. 1.22.71 ÷ 100 =
  2. 2.16.15 ÷ 1000 =
  3. 3.65.8 ÷ 10 =
  4. 4.10.9 ÷ 10 =
  5. 5.42.17 ÷ 10 =
  6. 6.10.21 × 100 =
  7. 7.128.5 × 1000 =
  8. 8.42.09 × 100 =
  9. 9.8.65 × 10 =
  10. 10.43.45 × 10 =
  11. 11.224.5 ÷ 10 =
  12. 12.8.03 ÷ 10 =
  13. 13.37.29 ÷ 10 =
  14. 14.419.1 × 1000 =
  15. 15.389.1 × 10 =
  16. 16.103.1 × 10 =
  17. 17.84.3 ÷ 10 =
  18. 18.484.1 × 10 =
  19. 19.493.1 × 10 =
  20. 20.55.9 ÷ 100 =
  21. 21.319.3 × 10 =
  22. 22.9.72 × 1000 =
  23. 23.39.29 × 10 =
  24. 24.27.7 × 10 =
  25. 25.12.42 ÷ 1000 =
  26. 26.376.8 ÷ 1000 =
  27. 27.288.7 × 100 =
  28. 28.457.2 × 100 =
  29. 29.8.8 × 10 =
  30. 30.18.55 × 100 =
  31. 31.8.55 × 1000 =
  32. 32.346.7 ÷ 1000 =
  33. 33.104.9 ÷ 1000 =
  34. 34.229.5 × 10 =
  35. 35.496.1 × 100 =
  36. 36.45.45 × 100 =
  37. 37.6.18 ÷ 1000 =
  38. 38.260.3 × 1000 =
  39. 39.15.81 × 10 =
  40. 40.49.56 ÷ 100 =

Answer key

  1. 0.2271
  2. 0.01615
  3. 6.58
  4. 1.09
  5. 4.217
  6. 1021
  7. 128500
  8. 4209
  9. 86.5
  10. 434.5
  11. 22.45
  12. 0.803
  13. 3.729
  14. 419100
  15. 3891
  16. 1031
  17. 8.43
  18. 4841
  19. 4931
  20. 0.559
  21. 3193
  22. 9720
  23. 392.9
  24. 277
  25. 0.01242
  26. 0.3768
  27. 28870
  28. 45720
  29. 88
  30. 1855
  31. 8550
  32. 0.3467
  33. 0.1049
  34. 2295
  35. 49610
  36. 4545
  37. 0.00618
  38. 260300
  39. 158.1
  40. 0.4956

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