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 The PPT/PDF document "Integer Rules Review" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Integer Rules Review
Adding, Subtracting, Multiplying, and Dividing IntegersSlide2
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 zeroSlide3
Adding Integers
Rule:
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
Subtracting Integers
SAME-CHANGE-OPPOSITE
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
You try:
-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
You try:
-7 x -8 =
-21 ÷ 7 =
9 x -4 =
32 ÷ -8 =