1-4 Adding Real Numbers Hubarth Algebra. Identity Property of Addition For every real number n, n+0 = n and 0+n = n. Ex.-5 + 0 = -50 + 5 = 5 The opposite.

Slides:

Advertisements

Similar presentations

Day 4 Name all the sets of numbers to which each number belongs to:

Advertisements

Solving Linear Equations

STAAR Review Adding / subtracting integers

 Two Rules: 1. To add numbers with the same sign, ADD the absolute values and the answer has the same sign as the original numbers.  EXAMPLE:

Subtracting Rational Numbers

Adding and Subtracting Integers.

1-4 adding and subtracting integers

Operations: Add, Subtract, Multiply, Divide

§ 1.2 Operations with Real Numbers and Simplifying Algebraic Expressions.

Objective 2 Add and subtract integers © 2002 by R. Villar All Rights Reserved.

Subtracting Integers Algebraically. How to Subtract Integers Algebraically 1.Rewrite the problem  Keep the first number the same  Change the problem.

1.2 ADDING AND SUBTRACTING INTEGERS I can find the sums and differences of integers by using a number line or using SSA/DSS.

Adding and Subtracting Signed Integers

Section 1-5 Subtracting Real Numbers SPI 12C: Add and subtract algebraic expressions. Objectives: Subtract real numbers using models and rules A runner.

2-2 HW = Pg #12-32e, 33-38, 44-50e, 62-78e.

2-2 HW = Pg #12-50 e, HW Continued.

§ 1.5 Addition of Real Numbers. The result of adding two or more numbers is called the sum of the numbers. You can think of gains and losses to find sums.

ALGEBRA 1 LESSON 1-4 Adding Real Numbers 1-4. Start at –3. Move right 5 units. Start at –3. Move left 5 units. Start at 3. Use a number line to simplify.

Adding, Subtracting, Multiplying, and Dividing Real Numbers.

Math Adding Integers.

Adding Integers Chapter 11-3.

Review Adding Integers: (-5) = = (-7) = =

Chapter 2 – Properties of Real Numbers 2.2 – Addition of Real Numbers.

September 13, 2012 Working with Integers Warm-up: 1. Identify the property for: 3(1) = 3 2. Simplify: 6 + 3(9 – 1) + 2  Translate into an algebraic.

2.2 Subtracting Rational Numbers. 2.2 – Subtracting Rational #s Goals / “I can…” Subtract rational numbers Apply subtraction.

ALGEBRA READINESS Chapter 5 Section 2.

1 Warm-up Get your checklist from the table. Get your quiz from my desk. Update your checklist using your quiz. Staple your quiz to the back of your checklist.

9/5/13 Warm-up 1.) 2.) 3.) CHALLENGE: ANSWERS 1.) 24 2.) ) 56 CHALLENGE: zero.

Chapter 1.1 Additive Inverse Absolute Value Adding Real Numbers.

Applied Algebra B Lesson: 2 – 3 Adding Integers Objective: Learn to add integers.

Positive and Negative Numbers

Real Numbers Chapter 1 Copyright © 2015, 2011, 2007 Pearson Education, Inc. Chapter 1-1.

Same Signs Different Signs 1) =+7 Objective- To solve problems involving operations with integers. Combining.

Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall. Chapter 1 Real Numbers and Introduction to Algebra.

Chapter 2 Lesson 2 Adding Integers pgs What you will learn: *Add two or more integers.

2.1 Adding Rational Numbers. 2.1 – Adding Rational #s Goals / “I can…” Add rational numbers using models and rules Apply addition.

1.2 Adding Integers. Same Sign Add and keep the sign.

ALGEBRA 1 Lesson 1-4 Warm-Up. ALGEBRA 1 Lesson 1-4 Warm-Up.

Integers Around Us Student Sample. Where do we see integers in action?

Copyright©amberpasillas2010. You have learned lots of things about adding and subtracting integers. Let’s review addition !

+ 1.5 Adding and Subtracting Real Numbers Wednesday August 26, 2015.

Adding and Subtracting Real Numbers. Vocabulary Additive Inverse-the opposite of a number Identity Property of Addition: – for any number, n, n + 0 =

Copyright © 2017, 2013, 2009 Pearson Education, Inc. 1 Section 1.5 Addition of Real Numbers.

Section 2-4: Adding Integers using Rules

Rules for Adding & Subtracting Integers

Integers Rules of Operation.

Warm-up 1.5 Write the absolute value and opposite of:

1 Introduction to Algebra: Integers.

Multiply or divide as usual.

Algebra 1 Section 2.2 Add real numbers

Algebra 1 Section 2.3 Subtract real numbers

Lesson 1.1 How do you evaluate and write variable expressions?

WARM UP 4 EVALUATING EXPRESSIONS Evaluate the expression for the given variable. 1. x + 3 when x = 2 2. x – 7 when x = x when x = 0 4. (x)(5) when.

Chapter 1 Introduction to Algebra: Integers

Adding and Subtracting Real Numbers

Adding and Subtracting Integers.

Integers & Absolute Value

Adding and Subtracting Positive and Negative Numbers

Adding/Subtracting Integers

Subtracting Real Numbers

Subtracting Integers Sec 2.3 pg

Adding Real Numbers Find each sum

Algebra 1 Section 1.3.

3-2 Solving Inequalities Using Addition and Subtraction

Copyright © 2011 Pearson Education, Inc. Publishing as Prentice Hall

Operations with Integers

SECTION 1-5 : ADDING and SUBTRACTING REAL NUMBERS

Chapter 2-2 Adding Integers

SECTION 1-5 : ADDING and SUBTRACTING REAL NUMBERS

Adding and Subtracting Real Numbers

Presentation transcript:

1-4 Adding Real Numbers Hubarth Algebra

Identity Property of Addition For every real number n, n+0 = n and 0+n = n. Ex = = 5 The opposite of a number is its additive inverse. Ex.The additive inverse of 10 is -10 The additive inverse of -25 is 25 Inverse Property of Addition For every real number n, there is a additive inverse –n such that n + (-n) = 0 Ex.14 + (-14) = = 0

a. 3 + (–5) 3 + (–5) = –2 b. –3 + 5 –3 + 5 = 2 Start at –3. Move left 5 units. Start at –3. Move right 5 units. c. –3 + (–5) –3 + (–5) = –8 Start at –3. Move left 5 units. Ex. 1 Using a Number Line Model Simplify each expression

Rules Adding Numbers With the Same Signs To add two number with the same sign, add the absolute values of the two numbers together and keep the sign the same for your answer. Ex = (-15) = -23 Adding Numbers With Different Signs To add two numbers with different signs, subtract the absolute value of the smaller value from the larger and take the sign of the larger number for your answer. Ex = (-15) = -3

Simplify each expression. a (–23) = b. –6.4 + (–8.6) = Ex 2 Adding Numbers c = d =

The water level in a lake rose 6 inches and then fell 11 inches. Write an addition statement to find the total change in water level. 6 + (–11) = –5 The water level fell 5 inches. Ex 3 Application

Evaluate (–t) for t = – (–t) = [–(–3)]Substitute –3 for t. = [3]–(–3) means the opposite of –3, which is 3. = 6.6Simplify. Ex 4 Evaluating Expressions

Practice 1.Simplify each expression a.3 + (-5) = b =c = d = 2. A football team gains 2 yards and then loses 7 yards in two plays. Use addition to find the result of the two plays. 3. Evaluate n for n = (-7) = -5 (-3)