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Subject: "Grade 4 math???"     Previous Topic | Next Topic
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Conferences The CTK Exchange Early math Topic #83
Reading Topic #83
viking1
Member since Dec-1-08
Dec-01-08, 04:29 PM (EST)
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"Grade 4 math???"
 
   My son came home today and said that he had to use "front end and compensation "to solve a math problem 523+2150
I have never heard of this, unless its anew name for an old method
can anyone help me out


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alexbadmin
Charter Member
2309 posts
Dec-01-08, 04:40 PM (EST)
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1. "RE: Grade 4 math???"
In response to message #0
 
   A google search led to this page:

https://www.iit.edu/~smile/ma9211.html

The meaning of "front end" is that you start adding with the most significant digits:


2150
523
------
2000
600
70
3
-----
2673

As to the compensation part, I am in the dark.


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