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Mathematics 21 Online
OpenStudy (anonymous):

A tree was 5 feet tall. One year later, the tree was 13 feet tall. Write an equation and use mental math to find how many feet f the tree grew.

OpenStudy (anonymous):

13-5

OpenStudy (anonymous):

8 feet

OpenStudy (anonymous):

1: the tree was 5, then plus some growth to become 13; growth must = 8: d) 5 + f = 13; 8

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