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Mathematics 15 Online
OpenStudy (anonymous):

what is the most accurate estimation of 5+4? is it 5,10,15,or20

OpenStudy (anonymous):

Add 5 and 4. Which number there is closest to 5 + 4?

OpenStudy (anonymous):

there is closest 10 but actualy it is 9 .

OpenStudy (unklerhaukus):

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