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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 596 · 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. 1.23.78 ÷ 100 =
  2. 2.20.82 × 100 =
  3. 3.18.52 × 10 =
  4. 4.36.96 ÷ 10 =
  5. 5.39.07 × 1000 =
  6. 6.135.6 × 10 =
  7. 7.35.82 ÷ 100 =
  8. 8.402.3 ÷ 100 =
  9. 9.464.9 ÷ 10 =
  10. 10.42.36 ÷ 1000 =
  11. 11.35.24 ÷ 10 =
  12. 12.34.22 × 100 =
  13. 13.97.6 ÷ 1000 =
  14. 14.206.8 ÷ 10 =
  15. 15.89.9 ÷ 100 =
  16. 16.386.1 × 10 =
  17. 17.444.5 ÷ 1000 =
  18. 18.1.5 × 100 =
  19. 19.6.32 ÷ 1000 =
  20. 20.399.9 ÷ 10 =
  21. 21.134.5 × 100 =
  22. 22.393.8 ÷ 100 =
  23. 23.22.46 ÷ 1000 =
  24. 24.195.4 × 100 =
  25. 25.12.36 × 10 =
  26. 26.33.54 ÷ 1000 =
  27. 27.368.6 ÷ 10 =
  28. 28.12.11 × 1000 =
  29. 29.5.41 × 10 =
  30. 30.386.9 ÷ 10 =
  31. 31.43.46 ÷ 100 =
  32. 32.6.29 ÷ 100 =
  33. 33.13.71 × 100 =
  34. 34.84.9 ÷ 1000 =
  35. 35.289.6 ÷ 10 =
  36. 36.0.22 ÷ 1000 =
  37. 37.273.2 ÷ 100 =
  38. 38.32.41 × 100 =
  39. 39.197.4 ÷ 10 =
  40. 40.219.7 × 10 =

Answer key

  1. 0.2378
  2. 2082
  3. 185.2
  4. 3.696
  5. 39070
  6. 1356
  7. 0.3582
  8. 4.023
  9. 46.49
  10. 0.04236
  11. 3.524
  12. 3422
  13. 0.0976
  14. 20.68
  15. 0.899
  16. 3861
  17. 0.4445
  18. 150
  19. 0.00632
  20. 39.99
  21. 13450
  22. 3.938
  23. 0.02246
  24. 19540
  25. 123.6
  26. 0.03354
  27. 36.86
  28. 12110
  29. 54.1
  30. 38.69
  31. 0.4346
  32. 0.0629
  33. 1371
  34. 0.0849
  35. 28.96
  36. 0.00022
  37. 2.732
  38. 3241
  39. 19.74
  40. 2197

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