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Adding, Subtracting, Multiplying, and Dividing Intergers
Transcript of Adding, Subtracting, Multiplying, and Dividing Intergers
Integers: numbers that are either positive or negative in an equation.
Positive numbers: Are just like the regular numbers on a number line 1 and 2
Negative numbers are the opposite of the regular numbers like -1 or -2
Rules for adding Integers
Well before we can add or subtract the integers we have to learn the rules
Rules for subtracting Integers
Now we are going to teach you the subtracting rules, but the adding and subtracting rules are sort of same
Rules for Multiply Integers
Rules for Dividing Integers
A negative divided by a negative number equals a positive
How to Add, Subtract, Multiply, and Divide Integers
If the numbers have the same sign then you will just add and keep the sign it has. 12+4=16
A negative times a negative number equals a positive.
If the numbers have different signs you will change subtract and then subtract and keep the sign of the bigger number! -12+9= -12-9=-3
A positive times a positive number equals a positive.
A negative times a positive number equals a negative.
A positive times a negative number equals a negative.
A positive divided by a positive number equal a positive
A negative divided by a positive number equals a negative
A positive divided by a negative number equals a negative
How it looks when you Add and Subtract Integers
Examples of Multiplying and Dividing Integers
I will show how I got these answers
when you subtract the integers you will always change subtraction to addition and change the second number to it's opposite
Multiplying Integers Using a Number Line
lets graph 4(-2)
You would start at zero and go left 2 times 4 times. Which would equal -4.