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Mental Math Processes - the 5 year old way


chepyl
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So my son had to do this problem out loud for me:

 

35+28

 

His first answer was 44. I said "No, that's not right." He said, yes I have 44 and 19! Here is the full reasoning of the problem...

 

35+28

I take 9 and get 44+19

I take the 10 and get 54+9

I take 6 and get 60+3

The answer is 63!

 

I would have taken 10, then 5, then 3...the way his brain works!!! Geesh!

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So my son had to do this problem out loud for me:

 

35+28

 

His first answer was 44. I said "No, that's not right." He said, yes I have 44 and 19! Here is the full reasoning of the problem...

 

35+28

I take 9 and get 44+19

I take the 10 and get 54+9

I take 6 and get 60+3

The answer is 63!

 

I would have taken 10, then 5, then 3...the way his brain works!!! Geesh!

 

 

This encourages me to hear. DS has a tendency at times to do something similar (smaller numbers :D ) and only give me part of his answer too. Perhaps that's because I'm too jumpy and cut him off before he's worked through the whole thing.

 

You know what is super weird to me though? The 9, 6 and 3 in your son's working. DS has a thing with 3 and groups of 3. Perhaps a coincidence but still ... interesting ...

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