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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 257 · 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. 1.44.28 × 10 =
  2. 2.361.2 × 10 =
  3. 3.5.8 ÷ 10 =
  4. 4.32.1 ÷ 1000 =
  5. 5.30.09 ÷ 100 =
  6. 6.29.01 × 1000 =
  7. 7.59.7 × 10 =
  8. 8.327.8 ÷ 10 =
  9. 9.28.37 × 100 =
  10. 10.326.1 × 100 =
  11. 11.149.4 ÷ 100 =
  12. 12.181.9 ÷ 10 =
  13. 13.185.1 × 1000 =
  14. 14.437.6 ÷ 10 =
  15. 15.498.8 ÷ 10 =
  16. 16.444.2 × 100 =
  17. 17.6.82 × 100 =
  18. 18.308.4 ÷ 100 =
  19. 19.2.35 ÷ 100 =
  20. 20.40.83 × 1000 =
  21. 21.30.71 × 1000 =
  22. 22.16.99 × 1000 =
  23. 23.9.11 ÷ 1000 =
  24. 24.25.78 ÷ 100 =
  25. 25.171.1 × 10 =
  26. 26.53.2 ÷ 10 =
  27. 27.290.7 × 1000 =
  28. 28.41.38 ÷ 1000 =
  29. 29.448.1 × 100 =
  30. 30.46.93 × 100 =
  31. 31.36.7 × 10 =
  32. 32.310.6 × 100 =
  33. 33.42.54 ÷ 1000 =
  34. 34.28.03 × 10 =
  35. 35.224.6 ÷ 1000 =
  36. 36.44.7 × 1000 =
  37. 37.171.8 ÷ 100 =
  38. 38.8.72 × 10 =
  39. 39.447.8 × 10 =
  40. 40.220.8 × 100 =

Answer key

  1. 442.8
  2. 3612
  3. 0.58
  4. 0.0321
  5. 0.3009
  6. 29010
  7. 597
  8. 32.78
  9. 2837
  10. 32610
  11. 1.494
  12. 18.19
  13. 185100
  14. 43.76
  15. 49.88
  16. 44420
  17. 682
  18. 3.084
  19. 0.0235
  20. 40830
  21. 30710
  22. 16990
  23. 0.00911
  24. 0.2578
  25. 1711
  26. 5.32
  27. 290700
  28. 0.04138
  29. 44810
  30. 4693
  31. 367
  32. 31060
  33. 0.04254
  34. 280.3
  35. 0.2246
  36. 44700
  37. 1.718
  38. 87.2
  39. 4478
  40. 22080

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