We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byMay Glenn
Modified over 5 years ago
Zero Pair 1 + -1 = 0
Why it works… __________ Property says you can add or subtract zero without changing the value of an expression. Identity
-4 + 2
8 + (-7)
4 + 2
-4 + (-2)
3 + -3
For homework, Kyle was adding integers. He looked at a computation and said, “I know the sign of the sum will be negative.” Based on Kyle’s statement, what do you know about the problem?
Annie added three integers and got a sum of zero. What might the three integers have been?
Let’s Think… What is ALWAYS true?
Let’s Think… What rule can we make for adding integers?
2 Most Important Rules to Remember 1.Same sign- Add, keep sign 2.Different sign- Subtract, keep sign of # with greater absolute value
ADDING REAL NUMBERS Section 2.2.
Day 4 Name all the sets of numbers to which each number belongs to:
Adding First, you need to know… Associative Property of Addition When: (a + b) + c = a + (b + c) Commutative Property of Addition When: a + b= b + a.
2.1 Integers & Absolute Value 2.2 Adding Integers.
Subtracting Rational Numbers
EXAMPLE 2 Adding Integers Find the sum 12 + – – 4 = 8 – Different signs, so subtract |4| from | 12|. – Use sign of number with greater absolute.
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.
Adding Integers with Different Signs
OBJECTIVES 2.2 Addition of Integers Slide 1Copyright 2012, 2008, 2004, 2000 Pearson Education, Inc. aAdd integers without using the number line.
ADDING INTEGERS Positive + Positive = Positive Positive + Positive = Positive ( +3) + (+2) = +5 ( +3) + (+2) = +5 When a number is positive, you do not.
Rules of Integers. Positive numbers are numbers that are above zero. Negative numbers are numbers below zero.
1.1 Positive and Negative Numbers 1.2 Addition with Negative Numbers 1.3 Subtraction with Negative Numbers.
Operations: Add, Subtract, Multiply, Divide
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.
Rational Numbers & Equations
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.
Quiz Review Properties and Integers Operations with Decimals Addition Subtraction Multiplication Division.
© 2021 SlidePlayer.com Inc. All rights reserved.