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Fishing Fractions: Compare and Calculate - Educational Math Tutorial

Learn how to compare and calculate fractions from fishing trips, including steps to reduce fractions, compare unlike denominators, and find the least common multiple. Practice with fun fish over 1 foot long scenarios!

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Fishing Fractions: Compare and Calculate - Educational Math Tutorial

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  1. Compare Unlike denominators

  2. Step 1 Compute the fraction from last year. 25 Fish over 1 foot long.

  3. Step 1 Total number of fish caught was 125

  4. Step 1 Our Fraction is: 25 125

  5. Step 2 Reduce the fraction • 25 and 125 can be divided by 25 25÷25 = 1 1 5 = 125 ÷25 = 5

  6. Step 3 Compute the fraction from this fishing trip • Find the fraction of fish over 1 foot long that you caught this year. 14 40 Over 1 foot long

  7. Step 4 14 40 Reduce the Fraction 2 • 14 and 40 can be divided by…. 14 ÷ 2= 7 7 20 = 40 ÷ 2= 20

  8. Step 5 Compare the fractions Which is greater? 1 Or 7 5 20 Find the Least Common Multiple

  9. What is a multiple? Multiples of a number = the numbers you get when you multiply it by other numbers. For example: 8,16, 24, 32, are all multiples of 8

  10. Common Multiple When 2 numbers have a common multiple it means that the same number is multiple of both of them

  11. Least Common Multiple: The lowest number that is a common multiple

  12. Going back to the fish problem… 1 Or 7 5 20 Find the least common multiple of 5 and 20

  13. The least common multiple is: 20

  14. Multiply the denominator, 5, to equal 20 • What you do to the bottom number, • you do to the top number equally.

  15. And then we changed our fraction 1/5…

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