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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 302 · 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. 1.22.42 ÷ 1000 =
  2. 2.1.81 × 100 =
  3. 3.190.2 × 10 =
  4. 4.120.3 × 10 =
  5. 5.38.34 ÷ 10 =
  6. 6.369.4 × 1000 =
  7. 7.181.1 ÷ 1000 =
  8. 8.95.1 × 10 =
  9. 9.25.21 × 10 =
  10. 10.40.49 ÷ 100 =
  11. 11.3.01 ÷ 1000 =
  12. 12.3.4 ÷ 100 =
  13. 13.42.51 ÷ 10 =
  14. 14.8.36 × 1000 =
  15. 15.20.23 ÷ 10 =
  16. 16.40.77 ÷ 1000 =
  17. 17.44.95 × 1000 =
  18. 18.87.9 × 100 =
  19. 19.2.61 × 100 =
  20. 20.13.74 × 10 =
  21. 21.8.88 ÷ 1000 =
  22. 22.258.2 ÷ 100 =
  23. 23.447.5 × 1000 =
  24. 24.27.51 ÷ 10 =
  25. 25.147.3 × 1000 =
  26. 26.204.8 × 10 =
  27. 27.367.5 ÷ 100 =
  28. 28.19.69 ÷ 1000 =
  29. 29.34.08 ÷ 100 =
  30. 30.12.91 ÷ 1000 =
  31. 31.36.37 × 100 =
  32. 32.204.7 × 100 =
  33. 33.29.03 × 100 =
  34. 34.21.3 ÷ 100 =
  35. 35.4.66 × 100 =
  36. 36.85.9 × 1000 =
  37. 37.29.71 × 100 =
  38. 38.3.73 × 1000 =
  39. 39.4.23 × 100 =
  40. 40.16.5 ÷ 10 =

Answer key

  1. 0.02242
  2. 181
  3. 1902
  4. 1203
  5. 3.834
  6. 369400
  7. 0.1811
  8. 951
  9. 252.1
  10. 0.4049
  11. 0.00301
  12. 0.034
  13. 4.251
  14. 8360
  15. 2.023
  16. 0.04077
  17. 44950
  18. 8790
  19. 261
  20. 137.4
  21. 0.00888
  22. 2.582
  23. 447500
  24. 2.751
  25. 147300
  26. 2048
  27. 3.675
  28. 0.01969
  29. 0.3408
  30. 0.01291
  31. 3637
  32. 20470
  33. 2903
  34. 0.213
  35. 466
  36. 85900
  37. 2971
  38. 3730
  39. 423
  40. 1.65

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