# Chapter 3: Addition and Subtraction of Decimals

Difficulty Level:

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

### Introduction

In this chapter, students will engage with the following concepts: decimals, measuring metric length, how to order, round, estimate, add, and subtract decimals, as well as stem and leaf plots and how to use estimation.

## Chapter Outline

- 3.1. Numbers with Decimal Place Value
- 3.2. Numbers in Expanded Form
- 3.3. Decimals in Words
- 3.4. Combinations of Decimal Money Amounts
- 3.5. Equivalent Metric Units of Length
- 3.6. Metric Unit Length Conversions
- 3.7. Appropriate Tools for Metric Measurement
- 3.8. Appropriate Units for Metric Measurement
- 3.9. Metric Length Comparison
- 3.10. Decimal Comparison
- 3.11. Decimal Rounding on a Number Line
- 3.12. Decimal Rounding Given Place Value
- 3.13. Small Decimal Rounding to a Leading Digit
- 3.14. Large Decimal Rounding
- 3.15. Decimal Rounding to Estimate Sums and Differences
- 3.16. Front-End Estimation
- 3.17. Decimal Addition
- 3.18. Decimal Subtraction
- 3.19. Mental Math to Add and Subtract Decimals
- 3.20. Properties in Decimal Operations
- 3.21. Stem-and-Leaf Plots
- 3.22. Stem-and-Leaf Plots, Range of a Data Set
- 3.23. Stem-and-Leaf Plots, Mean, Median and Mode
- 3.24. Problem Solving Plan, Estimation with Decimals

### Chapter Summary

### Image Attributions

## Description

This chapter covers: decimals, measuring metric length, how to order, round, estimate, add, and subtract decimals, as well as stem and leaf plots and how to use estimation.

## Difficulty Level:

At Grade## Subjects:

## Grades:

## Date Created:

Nov 19, 2014## Last Modified:

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