standard_description: Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers. For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2.
problem_activity: A coffee shop has 8 bags full of used coffee grounds. They weighed the amount of grounds in each bag and recorded their weight in the line plot below.
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Weight (in pounds)
The coffee shop wants to put the same amount, in pounds, of coffee grounds in the 8 bags to donate to local farmers to use as fertilizer. How much coffee grounds, in pounds, should be in each bag so that all of the bags have the same weight?


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