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#### Description:

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Ben wrote a mixed number as the fraction 7$\frac{1}{3}$. Here is his work: \begin{align} 7\frac{1}{3} &= \frac{7}{1}+\frac{1}{3} &\text{ (Step 1)} \\ &...

#### Subjects:

• Mathematics > General
• Education > General

#### Keywords:

Informal Education,oai:nsdl.org:2200/20130211105338581T,NSDL,Grade 4,Upper Elementary,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-103,Elementary School,Vocational/Professional Development Education,Mathematics,Education

English

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#### Collections:

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Update Standards?

#### CCSS.Math.Content.4.NF.B.3c: Common Core State Standards for Mathematics

Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.
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