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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 24 · 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. 1.136.9 ÷ 100 =
  2. 2.251.3 × 1000 =
  3. 3.19.3 × 100 =
  4. 4.102.6 ÷ 10 =
  5. 5.268.8 × 100 =
  6. 6.2.91 × 1000 =
  7. 7.22.06 ÷ 100 =
  8. 8.485.3 × 10 =
  9. 9.201.3 × 10 =
  10. 10.1.22 ÷ 1000 =
  11. 11.34.92 × 100 =
  12. 12.17.11 ÷ 10 =
  13. 13.460.8 × 10 =
  14. 14.42.97 × 100 =
  15. 15.273.7 × 100 =
  16. 16.16.41 ÷ 10 =
  17. 17.133.2 ÷ 1000 =
  18. 18.180.5 ÷ 10 =
  19. 19.18.1 ÷ 1000 =
  20. 20.66.6 ÷ 10 =
  21. 21.41.07 × 100 =
  22. 22.22.71 × 10 =
  23. 23.272.1 × 10 =
  24. 24.26.37 × 1000 =
  25. 25.12.35 ÷ 1000 =
  26. 26.19.74 ÷ 1000 =
  27. 27.481.1 ÷ 100 =
  28. 28.47.32 ÷ 10 =
  29. 29.123.9 ÷ 1000 =
  30. 30.21.35 ÷ 10 =
  31. 31.27.61 ÷ 10 =
  32. 32.130.6 × 10 =
  33. 33.28.51 × 10 =
  34. 34.2.25 ÷ 10 =
  35. 35.451.9 × 10 =
  36. 36.26.21 ÷ 1000 =
  37. 37.35.41 × 10 =
  38. 38.217.6 × 10 =
  39. 39.11.81 × 10 =
  40. 40.474.1 × 100 =

Answer key

  1. 1.369
  2. 251300
  3. 1930
  4. 10.26
  5. 26880
  6. 2910
  7. 0.2206
  8. 4853
  9. 2013
  10. 0.00122
  11. 3492
  12. 1.711
  13. 4608
  14. 4297
  15. 27370
  16. 1.641
  17. 0.1332
  18. 18.05
  19. 0.0181
  20. 6.66
  21. 4107
  22. 227.1
  23. 2721
  24. 26370
  25. 0.01235
  26. 0.01974
  27. 4.811
  28. 4.732
  29. 0.1239
  30. 2.135
  31. 2.761
  32. 1306
  33. 285.1
  34. 0.225
  35. 4519
  36. 0.02621
  37. 354.1
  38. 2176
  39. 118.1
  40. 47410

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