Chapter 1 Review of Real Numbers Section 2

Chapter 1 Review of Real Numbers Section 2 Operations with Integers Copyright © 2016, 2012, and 2009 Pearson Education, Inc. 1

Concept Adding a Positive Integer and a Negative Integer Find the difference between the absolute values of the two integers. The sign of the result is the same as the sign of the number that has the largest absolute value. Copyright © 2016, 2012, and 2009 Pearson Education, Inc. 2

Example Adding a Positive Integer and a Negative Integer Add: Copyright © 2016, 2012, and 2009 Pearson Education, Inc. 3

Example Adding a Positive Integer and a Negative Integer Add: Copyright © 2016, 2012, and 2009 Pearson Education, Inc. 4

Concept Adding Two Integers with the Same Sign Add the absolute values of the two integers. The sign of the result is the same as the sign of the two integers. Copyright © 2016, 2012, and 2009 Pearson Education, Inc. 5

Example Adding Two Integers with the Same Sign Add: Copyright © 2016, 2012, and 2009 Pearson Education, Inc. 6

Concept General Strategy for Adding/Subtracting Integers • Simplify “double signs. ” • Determine whether each integer is contributing positively or negatively to the total. • Add up all integers that are contributing positively to the total. Add up all integers that are contributing to the total negatively. • Finish by finding the sum of these two totals. Copyright © 2016, 2012, and 2009 Pearson Education, Inc. 7

Example General Strategy for Adding/Subtracting Integers Simplify: Copyright © 2016, 2012, and 2009 Pearson Education, Inc. 8