Teacher Notes

Knowing how do you decompose an improper fraction into a sum of a whole number and a number less than 1 is the first step of understanding a mixed number. You should start with using visual models to build understanding. When adding and subtracting mixed numbers we are joining or separating parts within the same whole.
Student Knowledge Goals

I know that mixed numbers can be written as fractions.

I can use the properties of operations to solve addition and subtraction problems involving mixed numbers with like denominators.

I can use what I know about whole number addition and subtraction to solve problems with mixed numbers.

I can use what I know about adding and subtracting fractions to solve problems with mixed numbers.

I know that mixed numbers can be combined or separated (composed and decomposed).

I can use a variety of strategies for adding and subtracting mixed numbers.

I understand that mixed numbers can be combined or separated (composed and decomposed).
Vocabulary

improper fraction

mixed number
Lessons

__Engage NY Module 5 F-29__ – Estimate sums and differences using benchmark numbers.

__Engage NY Module 5 F-30__ – Add a mixed number and a fraction.

__Engage NY Module 5 F-31__ – Add mixed numbers.

__Engage NY Module 5 F-32__ – Subtract a fraction from a mixed number.

__Engage NY Module 5 F-33__ – Subtract a mixed number from a mixed number.

__Engage NY Module 5 F-34__ – Subtract mixed numbers.
Student Video Lessons

__Learn Zillion__ – Add and subtract mixed numbers with like denominators

__Virtual Nerd__ – Understand a fraction a/b with a > 1 as a sum of fractions 1/b

__Study Jams__ – Adding and Subtract mixed numbers
Online Problems and Assessments

__Khan Academy__ – Questions and Video Lessons

Add and subtract mixed numbers with like denominators
Online Games

__Adding Subtracting Mixed Numbers__
Printables

__Fraction Bars__

__Benchmark Fraction Strips__

__Adding Subtracting Mixed Numbers__

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