. Grade 4, Illustrative icon
Task

Cynthia's Perfect Punch

Illustrative MathematicsVaries

The purpose of this task is for students to estimate and compute sums of mixed numbers in a context. A common error for students who are not used to representing fractions with diagrams or on the number line is to add the numerators and the denominators of fractions together like so: Students still struggling with this should draw diagrams or number lines to represent the sums--graph paper is very useful for this as students can quickly and accurately represent the fractions in this task. Note that the equivalence between and is a third-grade expectation. If students are still struggling with that, please see the tasks that illustrate standard 3.NF.3.

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