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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 95 · 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. 1.87.3 × 1000 =
  2. 2.335.2 ÷ 100 =
  3. 3.204.9 × 1000 =
  4. 4.111.1 ÷ 1000 =
  5. 5.343.3 × 100 =
  6. 6.42.85 × 100 =
  7. 7.7.1 ÷ 1000 =
  8. 8.0.58 ÷ 1000 =
  9. 9.23.34 × 100 =
  10. 10.234.1 × 100 =
  11. 11.345.3 ÷ 10 =
  12. 12.10.54 ÷ 10 =
  13. 13.449.1 × 10 =
  14. 14.199.9 × 1000 =
  15. 15.334.1 ÷ 10 =
  16. 16.3.17 × 10 =
  17. 17.24.08 × 100 =
  18. 18.48.54 × 100 =
  19. 19.429.6 × 1000 =
  20. 20.13.42 ÷ 1000 =
  21. 21.23.78 × 10 =
  22. 22.236.3 × 1000 =
  23. 23.104.1 ÷ 10 =
  24. 24.379.9 ÷ 10 =
  25. 25.28.9 ÷ 10 =
  26. 26.7.28 ÷ 1000 =
  27. 27.117.9 × 1000 =
  28. 28.135.1 ÷ 10 =
  29. 29.33.9 × 100 =
  30. 30.80.3 ÷ 10 =
  31. 31.14.63 × 1000 =
  32. 32.430.1 × 10 =
  33. 33.62.1 × 100 =
  34. 34.309.8 × 100 =
  35. 35.91.3 × 1000 =
  36. 36.398.3 × 10 =
  37. 37.6.32 ÷ 1000 =
  38. 38.13.88 × 100 =
  39. 39.347.3 ÷ 10 =
  40. 40.35.92 × 100 =

Answer key

  1. 87300
  2. 3.352
  3. 204900
  4. 0.1111
  5. 34330
  6. 4285
  7. 0.0071
  8. 0.00058
  9. 2334
  10. 23410
  11. 34.53
  12. 1.054
  13. 4491
  14. 199900
  15. 33.41
  16. 31.7
  17. 2408
  18. 4854
  19. 429600
  20. 0.01342
  21. 237.8
  22. 236300
  23. 10.41
  24. 37.99
  25. 2.89
  26. 0.00728
  27. 117900
  28. 13.51
  29. 3390
  30. 8.03
  31. 14630
  32. 4301
  33. 6210
  34. 30980
  35. 91300
  36. 3983
  37. 0.00632
  38. 1388
  39. 34.73
  40. 3592

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