Accentuate the Negative Integers and Rational Numbers PowerPoint Presentation, PPT

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Investigation2: Adding and Subtracting Rational Numbers. Students will demonstrate how to combine numbers with the same sign and different signs. Homework. Pg. 44. 1-11 odd. 19-29 odd. 30, 48,54,66. ID: 744018

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Accentuate the Negative Integers and Rational Numbers

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Accentuate the Negative
Integers and Rational Numbers
Investigation2: Adding and Subtracting Rational Numbers
Students will demonstrate how to combine numbers with the same sign and different signs
Homework
Pg
44
1-11 odd
19-29 odd
30, 48,54,66
Warm-up
2.1 Extending Addition to rational numbers
Students will understand different properties when combining numbers. Students will demonstrate an algorithm when solving computations.
Problem 2.1 pg
32
We will discuss as a class
How can you determine if an answer will be positive, negative or zero
Positive
if both numbers are positive and adding
if signs are different and positive number is farther from zero
Positive minus a negative
Negative
if both signs are negative and adding
if signs are different and negative number is farther from zero
Negative minus a positive
Zero
We discuss more in the next section but when numbers are the same but signs are opposite for addition
Subtract same number from original
Warm-up
2.2 Extending Subtraction to Rational Numbers
Students will demonstrate understanding of additive properties of numbers.
Students will demonstrate understanding of absolute value.
Problem 2.2 page 37
We will discuss as a class
Additive inverse
same number different sign
their sum would be zero
Additive identity
zero added to a number doesn’t change the number
Absolute Value
This is really the distance a number is from zero, distance is always positive, symbol | |, means make any number inside positive, if already positive it doesn’t do anything
0
Warm-up
1
2.3 The +/- connection
Students will learn how to rewrite addition as subtraction
dn
vice versa
2
Problem 2.3 pg
40
We will discuss as a class
How do we rewrite
If adding a negative it is the same as subtracting that number
If subtracting a positive it is the same as adding a negative
If subtracting a negative it turns to adding a
postive
3
Warm-up
4
2.4 Fact Families
Students will understand how to make equivalent equations and expressions.
5
Problem 2.4 page 43
We will discuss in class
Addition order of numbers doesn’t matter
Subtraction does
6
Quiz
7