Download presentation

Presentation is loading. Please wait.

1
**Chapter 2 – Properties of Real Numbers**

2.3 – Subtraction of Real Numbers

2
**2.3 – Subtraction of Real Numbers**

Today we will be learning how to: Subtract real numbers using the subtraction rule Using subtraction of real numbers to solve real-life problems

3
**2.3 – Subtraction of Real Numbers**

Some addition expressions can be evaluated using subtraction. ADDITION PROBLEM EQUIVALENT SUBTRACTION PROBLEM 5 + (-3) = 2 5 – 3 = 2 9 + (-6) = 3 9 – 6 = 3

4
**2.3 – Subtraction of Real Numbers**

Adding the opposite of a number is equivalent to subtracting the number. SUBTRACT RULE To subtract b from a, add the opposite of b to a a – b = a + (-b) The result is the difference of a and b Example: 6 – 4 = 6 + (-4)

5
**2.3 – Subtraction of Real Numbers**

Example 1 Find the difference -6 – 3 1/2 – 2/3 -15 – (-16) -3 – 6

6
**2.3 – Subtraction of Real Numbers**

Look at the first and fourth example. In addition, we have the commutative property. In subtraction, the order in which we subtract matters.

7
**2.3 – Subtraction of Real Numbers**

Example 2 Evaluate the expression 10 – – (-18)

8
**2.3 – Subtraction of Real Numbers**

When an expression is written as a sum, the parts that are added are the TERMS of the expression. For example, you can write the expression 8 – y as 8 + (-y). The terms are 8 and –y.

9
**2.3 – Subtraction of Real Numbers**

Example 3 Find the terms of 3x – 5.

10
**2.3 – Subtraction of Real Numbers**

Example 4 Evaluate the function y = -x – 7 for these values of x: -2, -1, 0, 1. Organize your results in a table & describe the pattern. Input Function Output x = -2 y = -(-2) - 7 -5 x = -1 x = 0 x = 1

11
**2.3 – Subtraction of Real Numbers**

HOMEWORK Page 82 #16 – 50 even

Similar presentations

OK

Distributive Property The Distributive Property of Multiplication over Addition Multiplying a sum by a number is the same as multiplying each addend by.

Distributive Property The Distributive Property of Multiplication over Addition Multiplying a sum by a number is the same as multiplying each addend by.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on population census 2011 data Ppt on different layers of the earth Ppt on instrument landing system diagram Ppt on autotrophic mode of nutrition Ppt on internet services for class 10th Free download ppt on indian culture Project ppt on introduction to business finance Ppt on project tiger in india Ppt on structure in c programming Ppt on eia report sample