Lobster 1 : 1 7/16
Lobster 2 : 2 1/8
Lobster 3 : 1 1/4
In order for Daniel & his dad to find out how much all of these lobsters weighed, they simply need to add these weights together! :)
However, due to the fact that none of these lobsters have the same denominators (bottom number in a fraction), we have to find their LCD (lowest common denominator)!
So, let's look at our denominators :
16, 8, 4
Now, what do all three of these numbers have in common? They ALL multiply into 16!
16 goes in once, 8 goes in twice, and 4 goes in four times!
So, we must change the fractions so that all three have the same denominators.
1 7/16 stays the same, because it already has a denominator of 16! :)
However, 2 1/8 & 1 1/4 must change because they have different ones.
2 1/8 : Remember, 8 goes into 16 twice, so multiply the fraction by 2/2.
2 1/8 × 2/2 = 2 2/16 ← 2 1/8
1 1/4 : Remember, 4 goes into 16 four times, so multiply the fraction by 4/4.
1 1/4 × 4/4 = 1 4/16 ← 1 1/4
So, our new fractions are :
1 7/16 , 2 2/16 , 1 4/16
Now, add these together.
1 7/16 + 2 2/16 + 1 4/16 = ?
Add the whole numbers together first.
1 + 2 + 1 = 4 →our whole number
Then, add together the numerators (top numbers in a fraction).
7 + 2 + 4 = 13 →our numerator
**Remember ** When adding/subtracting fractions together, never do anything to the denominator. The denominator always stays the same.
Now, we put our final fraction together.
4 13/16
So, all three lobsters weighed 4 13/16
~Hope I helped!~
