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Erica used friendly numbers to find 43-19 she added 1 to 19 and subtracted 1 from 43 what is Erica's error

Erica used friendly numbers to find 43-19 she added 1 to 19 and subtracted 1 from 43 what is Erica's error
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Erica used friendly numbers to find 43-19 she added 1 to 19 and subtracted 1 from 43 what is Erica's error

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User Michael Gundlach
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42-20=22 thats the answer i belive u were looking for.


answered
User Laurids
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Erica used friendly numbers to find 43-19 she added 1 to 19 and subtracted 1 from 43 what is Erica's error
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