## Beside the Point: Operating with Decimals, Percents, and Integers

Students build on their understanding of fractions as they study other rational numbers. Through investigations in this unit students explore the relationship between fractions, decimals and percents. The unit ends with students exploring different models for adding and subtracting integers.

### NCTM Standard: Number and Operations

• Understand numbers, ways of representing numbers, relationships among numbers, and number systems
• Understand meanings of operations and how they relate to one another
• Compute fluently and make reasonable estimates

### Primary Mathematical Goals

• Compare and order fractions, decimals and percents
• Add, subtract, multiply, and divide decimals
• Add and subtract integers
• Use mental math to estimate answers for fraction, decimal, and percent problems
• Solve real world problems using fractions, decimals and percents
• Calculate the percent of a number
• Use a variety of methods to model addition and subtraction of integers