. Grade 7, Illustrative icon

Rounding and Subtracting

Illustrative MathematicsVaries

This task addresses what happens to rounding discrepancies when arithmetic is performed on rounded numbers and would be a good problem for classroom discussion. This is an important aspect of precision and it is good for students to gain early exposure to this kind of work. For students who do well on this task, the teacher might ask them to consider what would happen, in the same scenario, to the sum compared to the sum of the rounded numbers or similarly for the products.

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