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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 390 · 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. 1.50.1 ÷ 1000 =
  2. 2.252.4 × 1000 =
  3. 3.20.04 ÷ 1000 =
  4. 4.18.31 × 1000 =
  5. 5.35.96 ÷ 10 =
  6. 6.118.9 × 100 =
  7. 7.37.31 × 100 =
  8. 8.446.5 × 10 =
  9. 9.349.1 × 1000 =
  10. 10.213.2 × 1000 =
  11. 11.155.5 ÷ 10 =
  12. 12.43.42 ÷ 10 =
  13. 13.383.2 ÷ 100 =
  14. 14.16.98 × 100 =
  15. 15.42.53 ÷ 1000 =
  16. 16.34.61 × 100 =
  17. 17.383.9 × 100 =
  18. 18.42.03 × 10 =
  19. 19.323.1 ÷ 10 =
  20. 20.162.1 × 1000 =
  21. 21.439.9 × 100 =
  22. 22.41.93 × 100 =
  23. 23.331.8 × 100 =
  24. 24.53.8 ÷ 1000 =
  25. 25.370.5 ÷ 1000 =
  26. 26.23.93 × 1000 =
  27. 27.184.5 ÷ 100 =
  28. 28.3.38 ÷ 10 =
  29. 29.24.33 × 100 =
  30. 30.26.14 × 100 =
  31. 31.39.87 × 100 =
  32. 32.4.86 × 100 =
  33. 33.26.36 ÷ 1000 =
  34. 34.34.89 × 100 =
  35. 35.8.68 × 10 =
  36. 36.218.2 × 10 =
  37. 37.363.2 ÷ 10 =
  38. 38.1.86 × 10 =
  39. 39.31.31 ÷ 10 =
  40. 40.251.8 ÷ 100 =

Answer key

  1. 0.0501
  2. 252400
  3. 0.02004
  4. 18310
  5. 3.596
  6. 11890
  7. 3731
  8. 4465
  9. 349100
  10. 213200
  11. 15.55
  12. 4.342
  13. 3.832
  14. 1698
  15. 0.04253
  16. 3461
  17. 38390
  18. 420.3
  19. 32.31
  20. 162100
  21. 43990
  22. 4193
  23. 33180
  24. 0.0538
  25. 0.3705
  26. 23930
  27. 1.845
  28. 0.338
  29. 2433
  30. 2614
  31. 3987
  32. 486
  33. 0.02636
  34. 3489
  35. 86.8
  36. 2182
  37. 36.32
  38. 18.6
  39. 3.131
  40. 2.518

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