Question

Katy's measured the growth of a plant seedling. The seedling grew 1/3 inch by the end of the first week. The seedling grew 5/6 inch by the end of the second week. About how much did the seedling grow in the fist 2 weeks?

Answer 1

In the given problem it is already given that the seedling grew by 1/3 inch in the first week and 5/6 inch in the second week. Then it would not be a problem to find the total length of growth of the seedling.
The length up to which the seedling grew in 2 weeks = (1/3) + (5/6)
                                                                                     = (2 + 5)/6
                                                                                     = 7/6 inch
So the seedling grew by 7/6 inches in two weeks. I hope that this answer is what you were looking for. You can solve such problems in the future by following the method that is applied for solving this problem.

Answer 2

1/3 + 5/6 = 2/6 + 5/6 = 7/6
It grew by 7/6 or 1 1/6 inches by the first 2 weeks.