7 th grade math. integers integers are whole numbers and their opposites. this means they are...

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