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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 115 · 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. 1.93.8 × 1000 =
  2. 2.27.39 ÷ 10 =
  3. 3.8.98 ÷ 10 =
  4. 4.310.7 × 1000 =
  5. 5.253.4 ÷ 10 =
  6. 6.22.01 ÷ 10 =
  7. 7.48.6 ÷ 1000 =
  8. 8.33.48 ÷ 10 =
  9. 9.418.3 ÷ 10 =
  10. 10.446.3 ÷ 100 =
  11. 11.154.5 ÷ 10 =
  12. 12.220.1 × 10 =
  13. 13.93.7 × 100 =
  14. 14.391.5 ÷ 1000 =
  15. 15.165.2 ÷ 10 =
  16. 16.369.5 × 1000 =
  17. 17.26.06 ÷ 1000 =
  18. 18.385.7 × 100 =
  19. 19.28.5 ÷ 100 =
  20. 20.269.2 × 1000 =
  21. 21.4.25 × 100 =
  22. 22.1.12 ÷ 1000 =
  23. 23.31.18 × 10 =
  24. 24.338.6 × 1000 =
  25. 25.13.18 × 100 =
  26. 26.192.1 ÷ 10 =
  27. 27.44.3 × 1000 =
  28. 28.36.62 × 10 =
  29. 29.321.2 × 1000 =
  30. 30.26.32 × 1000 =
  31. 31.40.1 × 100 =
  32. 32.0.45 ÷ 10 =
  33. 33.47.91 ÷ 1000 =
  34. 34.89.8 ÷ 10 =
  35. 35.356.8 × 100 =
  36. 36.328.3 ÷ 1000 =
  37. 37.226.9 × 100 =
  38. 38.5.9 × 1000 =
  39. 39.38.41 × 10 =
  40. 40.17.6 ÷ 1000 =

Answer key

  1. 93800
  2. 2.739
  3. 0.898
  4. 310700
  5. 25.34
  6. 2.201
  7. 0.0486
  8. 3.348
  9. 41.83
  10. 4.463
  11. 15.45
  12. 2201
  13. 9370
  14. 0.3915
  15. 16.52
  16. 369500
  17. 0.02606
  18. 38570
  19. 0.285
  20. 269200
  21. 425
  22. 0.00112
  23. 311.8
  24. 338600
  25. 1318
  26. 19.21
  27. 44300
  28. 366.2
  29. 321200
  30. 26320
  31. 4010
  32. 0.045
  33. 0.04791
  34. 8.98
  35. 35680
  36. 0.3283
  37. 22690
  38. 5900
  39. 384.1
  40. 0.0176

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