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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 987 · 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. 1.3.5 ÷ 1000 =
  2. 2.253.5 ÷ 10 =
  3. 3.31.09 × 100 =
  4. 4.319.1 × 1000 =
  5. 5.355.7 × 1000 =
  6. 6.25.07 × 100 =
  7. 7.13.17 ÷ 1000 =
  8. 8.368.3 × 1000 =
  9. 9.41.8 ÷ 10 =
  10. 10.231.1 ÷ 10 =
  11. 11.45.19 × 1000 =
  12. 12.24.84 ÷ 100 =
  13. 13.172.5 × 1000 =
  14. 14.285.7 × 1000 =
  15. 15.23.16 ÷ 10 =
  16. 16.76.1 ÷ 10 =
  17. 17.243.6 ÷ 100 =
  18. 18.481.8 × 10 =
  19. 19.404.7 ÷ 10 =
  20. 20.171.6 × 100 =
  21. 21.75.1 × 10 =
  22. 22.172.1 ÷ 100 =
  23. 23.20.97 × 10 =
  24. 24.33.9 × 100 =
  25. 25.35.2 × 10 =
  26. 26.37.29 ÷ 100 =
  27. 27.27.01 ÷ 10 =
  28. 28.6.63 ÷ 100 =
  29. 29.186.9 × 1000 =
  30. 30.108.2 × 100 =
  31. 31.359.3 ÷ 10 =
  32. 32.32.74 ÷ 10 =
  33. 33.203.8 × 10 =
  34. 34.339.1 × 10 =
  35. 35.408.2 ÷ 100 =
  36. 36.85.1 ÷ 10 =
  37. 37.101.8 × 10 =
  38. 38.39.03 × 1000 =
  39. 39.304.9 ÷ 100 =
  40. 40.398.8 ÷ 100 =

Answer key

  1. 0.0035
  2. 25.35
  3. 3109
  4. 319100
  5. 355700
  6. 2507
  7. 0.01317
  8. 368300
  9. 4.18
  10. 23.11
  11. 45190
  12. 0.2484
  13. 172500
  14. 285700
  15. 2.316
  16. 7.61
  17. 2.436
  18. 4818
  19. 40.47
  20. 17160
  21. 751
  22. 1.721
  23. 209.7
  24. 3390
  25. 352
  26. 0.3729
  27. 2.701
  28. 0.0663
  29. 186900
  30. 10820
  31. 35.93
  32. 3.274
  33. 2038
  34. 3391
  35. 4.082
  36. 8.51
  37. 1018
  38. 39030
  39. 3.049
  40. 3.988

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