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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 401 · 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. 1.49.25 ÷ 100 =
  2. 2.72.5 × 100 =
  3. 3.258.3 × 100 =
  4. 4.15.15 × 100 =
  5. 5.363.9 × 10 =
  6. 6.67.8 × 10 =
  7. 7.429.5 × 1000 =
  8. 8.9.91 × 1000 =
  9. 9.15.55 ÷ 10 =
  10. 10.54.6 ÷ 100 =
  11. 11.7.5 ÷ 10 =
  12. 12.315.1 ÷ 1000 =
  13. 13.350.7 × 10 =
  14. 14.10.93 ÷ 100 =
  15. 15.25.41 × 10 =
  16. 16.476.2 ÷ 10 =
  17. 17.425.7 × 10 =
  18. 18.13.69 × 1000 =
  19. 19.16.8 × 10 =
  20. 20.220.1 ÷ 10 =
  21. 21.424.8 ÷ 10 =
  22. 22.72.4 ÷ 10 =
  23. 23.200.1 ÷ 10 =
  24. 24.85.1 × 10 =
  25. 25.459.8 ÷ 1000 =
  26. 26.249.3 × 10 =
  27. 27.262.1 × 10 =
  28. 28.36.1 ÷ 100 =
  29. 29.26.07 × 10 =
  30. 30.90.5 × 1000 =
  31. 31.466.2 ÷ 100 =
  32. 32.71.4 × 1000 =
  33. 33.46.67 × 10 =
  34. 34.265.9 × 100 =
  35. 35.8.51 × 10 =
  36. 36.3.85 ÷ 1000 =
  37. 37.2.07 × 10 =
  38. 38.12.22 ÷ 100 =
  39. 39.3.51 ÷ 1000 =
  40. 40.196.1 ÷ 10 =

Answer key

  1. 0.4925
  2. 7250
  3. 25830
  4. 1515
  5. 3639
  6. 678
  7. 429500
  8. 9910
  9. 1.555
  10. 0.546
  11. 0.75
  12. 0.3151
  13. 3507
  14. 0.1093
  15. 254.1
  16. 47.62
  17. 4257
  18. 13690
  19. 168
  20. 22.01
  21. 42.48
  22. 7.24
  23. 20.01
  24. 851
  25. 0.4598
  26. 2493
  27. 2621
  28. 0.361
  29. 260.7
  30. 90500
  31. 4.662
  32. 71400
  33. 466.7
  34. 26590
  35. 85.1
  36. 0.00385
  37. 20.7
  38. 0.1222
  39. 0.00351
  40. 19.61

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