Denise W. answered • 09/19/13

Elementary / Middle / High School Math Tutor

Chris G.

asked • 09/18/13A green iguana is 5/6 foot long when it is born.During it's first year of life,it grows 2 1/6 feet.How long is the green iguana at the end of the first year?

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Denise W. answered • 09/19/13

Tutor

New to Wyzant
Elementary / Middle / High School Math Tutor

Hi Chris,

You can convert 2 1/6 into a vulgar (or top-heavy) fraction first, 2 = 12/6 and so 2 1/6 = 13/6.

Since the denominators are equal, you can simply add the numerators together: 5 + 13 = 18.

So, 5/6 + 13/6 = 18/6.

The HCF (Highest Common Factor) of 18 and 6 is 6 (since 6 is the highest number that can divide into 18 and 6 and leave a whole number answer).

Using the HCF of 18 and 6, we can simplify 18/6 down to 3/1 or 3.

5/6+2 1/6.

Since the LCD is 6, and both denominators are 6, you can just add the numerators within each fraction. (1+5)/6 = 6/6 which is then reduced to 1 and therefore added to 2 = 3

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