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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 869 · 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. 1.34.92 × 10 =
  2. 2.7.4 × 100 =
  3. 3.174.3 ÷ 10 =
  4. 4.365.4 × 10 =
  5. 5.249.2 × 1000 =
  6. 6.31.96 × 10 =
  7. 7.31.96 × 10 =
  8. 8.38.89 × 1000 =
  9. 9.23.62 × 1000 =
  10. 10.15.2 ÷ 10 =
  11. 11.42.7 × 10 =
  12. 12.33.62 × 1000 =
  13. 13.49.92 × 10 =
  14. 14.0.65 ÷ 10 =
  15. 15.14.26 × 100 =
  16. 16.21.61 × 100 =
  17. 17.6.01 × 10 =
  18. 18.5.13 ÷ 100 =
  19. 19.111.1 × 100 =
  20. 20.376.3 ÷ 10 =
  21. 21.67.6 × 100 =
  22. 22.69.4 ÷ 10 =
  23. 23.48.1 × 10 =
  24. 24.497.3 × 10 =
  25. 25.409.9 × 100 =
  26. 26.349.1 ÷ 100 =
  27. 27.32.93 × 10 =
  28. 28.461.4 × 1000 =
  29. 29.13.1 × 100 =
  30. 30.386.5 × 1000 =
  31. 31.135.1 ÷ 100 =
  32. 32.42.44 × 100 =
  33. 33.202.5 × 100 =
  34. 34.138.8 × 100 =
  35. 35.16.79 × 10 =
  36. 36.123.9 × 10 =
  37. 37.7.24 ÷ 1000 =
  38. 38.8.71 ÷ 1000 =
  39. 39.14.24 ÷ 10 =
  40. 40.22.94 × 100 =

Answer key

  1. 349.2
  2. 740
  3. 17.43
  4. 3654
  5. 249200
  6. 319.6
  7. 319.6
  8. 38890
  9. 23620
  10. 1.52
  11. 427
  12. 33620
  13. 499.2
  14. 0.065
  15. 1426
  16. 2161
  17. 60.1
  18. 0.0513
  19. 11110
  20. 37.63
  21. 6760
  22. 6.94
  23. 481
  24. 4973
  25. 40990
  26. 3.491
  27. 329.3
  28. 461400
  29. 1310
  30. 386500
  31. 1.351
  32. 4244
  33. 20250
  34. 13880
  35. 167.9
  36. 1239
  37. 0.00724
  38. 0.00871
  39. 1.424
  40. 2294

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