Today we learned how to find an answer to an equation using coins and pouches. With these problems, you find how many coins are in a pouch. For example...
C= coins P=pouches
cccccccccc=pppcccc
So first you put
3p (3 pouches)+4 (the 4 coins on the side it was with) =10 (total coins on the other side)
Then you do
3p+4=10
-4 -4
__________
3p=6
So you subtract 4 from 4, or in any problem, the number of coins on the pouches side. Then you'd subtract 4 from 10, or 4 from the 10 coins on the other side.
You see after you do the first steps you see 3p=6
So then you'd do
3p=6
________
3 3
_______
1p= 2
So 3 divided by 3 is 1, so you have 1 pouch. Then you do 6 divided by 3 and get 2, so there's 2 coins per pouch.
This is what we learned in class.
Wednesday, April 28, 2010
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