comic strip 7th grade math More Options: Make a Folding Card

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• OK class we are going to talk about adding/subtracting/multiplying/dividing fractions.
• When you are adding fractions you have to have a common denominator, but if you do not have a common denominator you have to make it a common denominator.  So if you have 3/5 plus 6/10 you can multiply 3/5 to get 6/10 so now you can add them together.  6/10 + 6/10 = 1 1/5 when you simplify
• When subtracting fractions you have to get the common denominator like adding.  So if you have 3/5-6/15 you have to multiply 3/5 by three to get 9/15.  Then you can do 9/15-6/15 =1/5 when you simplify
• When you are multiplying fractions you do not need a common denominator. So when you take 3/5 times 6/10 = 9/25 when you simplify.
• When you divide fractions you have to keep change flip.   You have to keep 3/5.  change the division symbol to  multiplication symbol.  Then you have to flip 6/10 to 10/6 so 3/5 divided by 6/10= 1
• And thats how you  add/subtract/ multiply/divide fractions
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