# Chapter 6: Addition and Subtraction of Fractions

**At Grade**Created by: CK-12

## Introduction

In Math 6, the learning content is divided into Concepts. Each Concept is complete and whole providing focused learning on an indicated objective. Theme-based Concepts provide students with experiences that integrate the content of each Concept. Students are given opportunities to practice the skills of each Concept through real-world situations, examples, guided practice and independent practice sections. In this sixth chapter, Addition and Subtraction of Fractions, students will engage in many Concepts including rounding fractions and mixed numbers, adding fractions with like and unlike denominators, subtracting fractions with like and unlike denominators, adding and subtracting mixed numbers, calculating elapsed time, box-and-whisker plots and problem solving.

- 6.1.
## Fraction Rounding to the Nearest Half

- 6.2.
## Mixed Number Rounding to the Nearest Whole

- 6.3.
## Mixed Number and Fraction Estimation

- 6.4.
## Sums of Fractions with Like Denominators

- 6.5.
## Differences of Fractions with Like Denominators

- 6.6.
## Expression Evaluation with Fractions

- 6.7.
## Sums of Fractions with Different Denominators

- 6.8.
## Differences of Fractions with Different Denominators

- 6.9.
## Expression Evaluation with Different Denominators

- 6.10.
## Sums of Mixed Numbers

- 6.11.
## Differences of Mixed Numbers without Renaming

- 6.12.
## Expression Evaluation with Mixed Numbers

- 6.13.
## Sums of Mixed Numbers with Renaming

- 6.14.
## Addition and Subtraction with Time

- 6.15.
## Elapsed Time

- 6.16.
## Quartiles

- 6.17.
## Box-and-Whisker Plots

- 6.18.
## Problem Solving Plan, Diagrams

### Chapter Summary

## Summary

Having completed this chapter, students are now ready to move on to Chapter Seven. Each Concept has provided students with an opportunity to engage and practice skills in many Concepts including rounding fractions and mixed numbers, adding fractions with like and unlike denominators, subtracting fractions with like and unlike denominators, adding and subtracting mixed numbers, calculating elapsed time, box-and-whisker plots and problem solving.