Bell Quiz. Objectives Find absolute value and add signed numbers.

Slides:

Advertisements

Similar presentations

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

Advertisements

2.1 Integers & Absolute Value 2.2 Adding Integers.

RATIONAL NUMBERS NATURAL NUMBERS {1, 2, 3,…}+ {0} = WHOLE NUMBERS {0, 1, 2, 3,…}+ NEG. WHOLE NOS. = INTEGERS {…-2, -1, 0, 1, 2,…}+ PURE FRACTIONS = RATIONAL.

Adding rational numbers Essential question: How can you add rational numbers? Unit 1-2.

Adding Integers. Adding Integers with the Same Sign Add the absolute values. The sum will have the same sign as the addends. Example 1 Find –2 + (-3)

Adding Integers with the Same Sign

2-4 Adding Integers Write and solve an addition expression for the following temperature change. The temperature dropped 2 degrees in one hour, the next.

ALGEBRA 1 Operations with Integers

1.1 Positive and Negative Numbers 1.2 Addition with Negative Numbers 1.3 Subtraction with Negative Numbers.

Vocabulary positive numbers - are greater than 0. They may be written with a positive (+), but they are usually written without it. negative numbers -

Adding and Subtracting Integers To add integers with the same sign, add their absolute values and then change the sign to the sign of the addends. Positive.

ALGEBRA 1. Lesson 1-3 Warm-Up ALGEBRA 1 Lesson 1-3 Warm-Up.

Adding /Subtracting Integers  Math Aero Standard 5:Level 5 and Level 6  I can understand positive and negative numbers.  I can understand the absolute.

Integer Operations. 1) What’s the rule for adding integers? *If both addends are Positive: - Add together and the sum is positive (Ex = 12) *If.

Lesson 2-2 Adding and Subtracting Rational Numbers.

Chapter 2.1 Rational Numbers and Chapter 2.2 Adding and Subtracting Rational Numbers.

September = = = =

1-2 Adding and Subtracting Real Numbers Warm Up Lesson Presentation

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

Adding and Subtracting Rational Numbers 2-2 Objective: Students will add and subtract integers and rational numbers. S. Calahan 2008.

Objective - To subtract integers. To subtract an integer is to add its opposite. a - b =a + -b = (-5) =8 + 5 = = 4 Rewrite the.

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

Integers Lesson 1a: Integers Integers are whole numbers and their opposites. Negative integers are numbers less than zero. Positive integers are numbers.

 Lets Review Integers (you do not need to write this part down)

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

Lesson 1-5 Warm-Up. Lesson 1-5 Warm-Up “Adding Integers” (1-5) What is the “Identity Property of Addition”? What is the “Inverse Property of Addition”?

Adding Integers. Zero Pair = 0 Why it works… __________ Property says you can add or subtract zero without changing the value of an expression.

Core Focus on Rational Numbers & Equations

Copyright © Ed2Net Learning, Inc.1 Integers Grade 5.

Math Adding Integers.

Name the set(s) of numbers to which each number belongs. a. –13b integers rational numbers ALGEBRA 1 LESSON 1-3 Exploring Real Numbers 1-3.

 Integers: are positive and negative whole numbers Examples: …-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5…

5 Minute Check Replace the with a, or = to make true. Complete in your notebook

THE REAL NUMBERS AND ABSOLUTE VALUE

Drill #17* Name the set of numbers graphed. Name the set of numbers that each number belongs to:

Objective - To recognize and order integers and to evaluate absolute values. Integers -The set of positive whole numbers, negative whole numbers, and zero.

BELL RINGER (-23) = a = b (-31) = c (-11) = d 5. Y = (-12) + 15.

5 Minute Check Replace the with a, or = to make true. Complete in your notebook

WHEN is the sum of two integers a negative number? The Number System Course 2, Inquiry Lab before Lesson 3-2.

Adding Integers SWBAT model addition of integers; add integers with like and unlike signs; add more than 2 integers.

It says "ADD" but sometimes I really subtract.

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

Absolute Value -The distance a given number is from zero on the number line Simplify. 1) 2) 3) 4) 5) 6) Objective - To add.

Bell Quiz. Objectives Subtract real numbers. Discuss the definition of additive inverse. Write an equivalent addition statement in order to subtract real.

Chapter 1.1 Additive Inverse Absolute Value Adding Real Numbers.

Unit 1 Rational Numbers Integers.

Ch 3.1 Add and Subtract Signed Numbers Vocabulary Op posites :2 numbers the same distance from 0 but in opposite directions

Understanding Addition of Integers. a. For each example above, what is the distance between 2 and the sum? b. Does the sum lie to the right or left of.

I. Adding Two Positive Integers (Regular Addition) 1.) = 2.) = 3.) = 4.) = 1-7 Adding Integers There are three parts to today's.

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

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

OPERATIONS WITH INTEGERS, ADDING AND SUBTRACTING RATIONAL NUMBERS Objective: To add, subtract, multiply, and divide integers, to compare and order rational.

Holt Algebra Adding and Subtracting Real Numbers 1-2 Adding and Subtracting Real Numbers Holt Algebra 1 Warm Up Warm Up Lesson Presentation Lesson.

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

1) What are the 2 rules for adding and subtracting integers? Find the difference.

Bell Quiz. Objectives Multiply and Divide signed numbers. Discuss the properties of real numbers that apply specifically to multiplication. Explain the.

Adding, Subtracting, Multiplying, and Dividing Integers

1 Introduction to Algebra: Integers.

Addition of Signed Numbers

SAME SIGNS JUST ADD !! ADDITION OF INTEGERS = (-2) = -10

Chapter 1 Introduction to Algebra: Integers

The Real Numbers And Their Representations

OR a RATIONAL NUMBER is any number that can be written as a fraction.

Objectives Add real numbers. Subtract real numbers.

Objectives Add real numbers. Subtract real numbers.

OR a RATIONAL NUMBER is any number that can be written as a fraction.

2 4 −4 −2 −5 −3 −

SECTION 1-5 : ADDING and SUBTRACTING REAL NUMBERS

SECTION 1-5 : ADDING and SUBTRACTING REAL NUMBERS

Presentation transcript:

Bell Quiz

Objectives Find absolute value and add signed numbers.

Finding Absolute Value The absolute value of a number is the distance from the number to zero on a number line. The absolute value of 4 is written │4│. │4│= 4 │– 4│= 4 Absolute Value The absolute value of a number n is the distance from n to 0 on a number line

Example 1 Finding the Absolute Value Simplify a.│0│ b.│7.12│ c.│1 – ¾│ d.–│11 – 2│

Lesson Practice Simplify a.│– 3.4│ b.│6/7│ c.│14 + (–22)│ d.–│7 + 16│

Modeling Real Number Addition Find the sum of: –5 + 3 (-)(-)(-)(-)(-) (+)(+)(+)

Modeling Real Number Addition a.4 + (– 3) b.– 2 + – 6 c.(– 7) + (7) d.The sum of two positive numbers is always positive. e.The sum of two negative numbers is always negative. f.The sum of a positive and a negative number is always negative.

Rules for Adding Real Numbers Adding Numbers With the Same Sign To add numbers with the same sign, add their absolute values. The sum will have the same sign as the addends. Examples = 5 – 3 + (– 2) = – 5 Adding Numbers With Different Signs To add numbers with different signs, find the difference of their absolute values. The sum will have the sign of the addend with the greater absolute value. Examples 3 + (– 2) = 1 (– 3) + 2 = – 1

Example 2 Adding Real Numbers Find the sum. a.(– 12) + (21) b.(– 19) + (– 8) c.(3.2) + (– 5.1) d.(– 3/5) + (– 1/5)

Lesson Practice Find the sum. a.(–23.4) b.(– 2/3) + (– 1/6)

Example 3 Identifying Sets of Real Numbers Closed Under Addition Determine whether each statement is true or false. a.The set of integers is closed under addition. b.The set of real numbers is closed under addition.

Lesson Practice Determine whether each statement is true or false. a.The set of rational numbers is closed under addition. b.The set of positive integers is closed under addition.

Example 4 Application: Football On first down, the Silver Wolves lost 4 yards. They gained 7 yards on second down. Use addition to find the total number of yards they will need to pick up in order to gain a first down.

Lesson Practice The temperature at 7:00 p.m. was 34°F. The temperature fell 12°F by midnight. Use addition to find the temperature at midnight.