Chapter 1: Q9. (page 12)

Find each sum or difference.
$- 80 + 102$

Short Answer

Expert verified

The sum of numbers is 22.

Step by step solution

Step 1. Determine to add or subtract.

Since – 80 and 102 are of opposite signs. So we will subtract them.

Step 2. Determine the sign.

We will subtract the absolute values. Since |102| is greater than $| - 80 |$ . So the result will be a positive value.

We can write

$- 80 + 102 = (- 80) + 102 = + (| 102 | - | - 80 |)$

Step 3. Simplify.

We know that the absolute values of the non-zero numbers are always positive.

So, $+ (| 102 | - | - 80 |) = + (102 - 80) = + 22 = 22$

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Find each sum or difference.
$- 80 + 102$

Short Answer

Step by step solution

Step 1. Determine to add or subtract.

Step 2. Determine the sign.

Step 3. Simplify.

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Find each sum or difference.-80+102

Short Answer

Step by step solution

Step 1. Determine to add or subtract.

Step 2. Determine the sign.

Step 3. Simplify.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Geometry

Probability and Statistics

Decision Maths

Logic and Functions

Calculus

Statistics

Study anywhere. Anytime. Across all devices.

Find each sum or difference.
$- 80 + 102$