Adding Subtracting Multiplying and Dividing Integers Vocabulary Integer whole numbers and their opposites Absolute value A numbers distance from zero on a number line Additive Inverse The opposite of any number x is x and their sum is zero ID: 545989 Download Presentation
Review Day 1. What is an Integer?. . A whole number that is either . greater than 0 . (positive). . or . less than 0 . . (negative). Can be visualized on a number line:. What are Opposites?. Two integers the same distance from the origin, but on different sides of zero.
Fall 2013. Lecture 11: . Modular arithmetic and applications. announcements. Reading assignment. Modular arithmetic. 4.1-4.3, 7. th. edition. 3.4-3.6, 6. th. edition. review: divisibility. Integers a, b, with a ≠ 0, we say that a .
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Overview. What is a pointer. Why do I care?. What can be 'pointed to'?. Example. What is a pointer. A pointer is essentially an address. It tells your. code "manipulate whatever is 'here'". Why do I care?.
Adding, Subtracting, Multiplying, and Dividing Integers. Vocabulary. Integer- whole numbers and their opposites. Absolute value- A number’s distance from zero on a number line. Additive Inverse- The opposite of any number, x, is –x, and their sum is zero.
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Integer Rules Review
Presentation on theme: "Integer Rules Review"— Presentation transcript:
Integer Rules Review
Adding, Subtracting, Multiplying, and Dividing IntegersSlide2
Integer- whole numbers and their opposites
Absolute value- A number’s distance from zero on a number line
Additive Inverse- The opposite of any number, x, is –x, and their sum is zeroSlide3
Same sign- add and keep that sign
-7 + -2 = -9
Different signs- subtract and take the sign of the number with the greater absolute value
-8 + 3 = -5 7 + -4 = 3Slide4
Rule- Keep the first integer the same, change the subtraction to addition, change the second integer to its opposite.
*Then use the addition rules!!Slide5
-9 – 4 =
3 – (-2) =
-5 - -(5) = Slide6
Multiplying and Dividing Integers
The rules are the same for both:
Same sign : positive answer
Different signs: negative answer
If more than two integers only apply rule to two integers at a time.Slide7