Integers7th Grade Math
IntegersIntegers are whole numbers and their
opposites. This means they are positive and negative numbers.
Examples: - 4, 5, -5, 2, -245
Comparing IntegersWhen you compare integers, you need to
place them on a number line and then decide the order they go in.
The further right a number is on the number line the larger it is.
Add and SubtractSong to the tune of “Row Row Row Your
Boat”
Same Signs Add and KeepDifferent Signs, SubtractKeep the sign of the larger valueThen you will be exact
*It works!!!
Practice - 3 + - 6 =
Same signs – addanswer is negative because 6 is
larger
8 + (- 4) = Different signs- subtract
8-4= 4 and the answer is positive because 8 is larger
One ExceptionIf you have a subtraction sign with a negative
sign right next to it…. Then you will change them to a plus sign and then follow the rules to the song.
6 – (- 3) = 6 + 3 = 9
Multiply and DivideRules for multiplication and division…
Same signs = positive answerDifferent signs = negative answer
+ x + = + + / + = + - x - = + - / - = + + x - = - + / - = - - x + = - - / + = -
Examples15 / - 3 = - 5
-4 x – 5 = 20