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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 488 · 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. 1.13.14 ÷ 10 =
  2. 2.426.6 ÷ 100 =
  3. 3.13.11 ÷ 10 =
  4. 4.39.51 × 100 =
  5. 5.27.16 ÷ 1000 =
  6. 6.355.1 × 1000 =
  7. 7.27.59 × 100 =
  8. 8.25.55 ÷ 100 =
  9. 9.32.26 ÷ 10 =
  10. 10.16.87 × 100 =
  11. 11.413.1 × 1000 =
  12. 12.23.96 × 100 =
  13. 13.23.24 ÷ 10 =
  14. 14.33.41 × 100 =
  15. 15.33.1 × 100 =
  16. 16.48.16 ÷ 1000 =
  17. 17.231.3 ÷ 10 =
  18. 18.6.13 × 10 =
  19. 19.189.9 × 10 =
  20. 20.7.78 ÷ 10 =
  21. 21.146.4 ÷ 1000 =
  22. 22.96.5 ÷ 10 =
  23. 23.242.6 × 100 =
  24. 24.14.47 × 10 =
  25. 25.20.21 ÷ 10 =
  26. 26.42.55 ÷ 1000 =
  27. 27.207.4 × 1000 =
  28. 28.5.48 × 100 =
  29. 29.286.1 ÷ 100 =
  30. 30.261.4 × 10 =
  31. 31.361.7 × 1000 =
  32. 32.37.69 ÷ 1000 =
  33. 33.25.61 ÷ 1000 =
  34. 34.23.14 × 1000 =
  35. 35.26.5 ÷ 10 =
  36. 36.7.54 × 10 =
  37. 37.37.89 ÷ 10 =
  38. 38.19.46 × 100 =
  39. 39.49.28 ÷ 1000 =
  40. 40.138.3 × 1000 =

Answer key

  1. 1.314
  2. 4.266
  3. 1.311
  4. 3951
  5. 0.02716
  6. 355100
  7. 2759
  8. 0.2555
  9. 3.226
  10. 1687
  11. 413100
  12. 2396
  13. 2.324
  14. 3341
  15. 3310
  16. 0.04816
  17. 23.13
  18. 61.3
  19. 1899
  20. 0.778
  21. 0.1464
  22. 9.65
  23. 24260
  24. 144.7
  25. 2.021
  26. 0.04255
  27. 207400
  28. 548
  29. 2.861
  30. 2614
  31. 361700
  32. 0.03769
  33. 0.02561
  34. 23140
  35. 2.65
  36. 75.4
  37. 3.789
  38. 1946
  39. 0.04928
  40. 138300

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