How Subtraction Works Lessons


Here's another one:

Look at this set:

9 circles

Count how many circles
are in this set...  There are 9!

Now, take five circles away...

9 circles with 5 being taken out

4 circles are left the 5 circles that were taken out

 
Count how many circles are left
in the set...  There are 4 left!		  

So, 9-5=4

   
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