Adding Integers with Same Signs
3 + 4
7
10+(-3)=
7
Whenever you add with different signs, you have to subtract
10-3
Then you keep the sign of the largest number, which is positive 10...
Your final answer should be
10-3=7
Does subtraction exist?
NO!
-6-5=
-11
True or False:
A number and its opposite add to 0?
True
10+6=
16
20+(-4)=
16
What are the three words I gave you to remember when subtracting integers?
Hint: K,C,C
Keep, Change, Change
5-19=
-14
True or False:
Absolute Value is always negative.
False
-8 + -5 =
-13
-35+9
-26
What is the first rule of subtracting integers? What does the K stand for?
Rule 1. Keep the first number the same
-7-(-13)=
6
What is the absolute value of -4?
4
-23 + -27=
-50
-21+8=
13
What is the second rule of subtracting integers? What does the first C stand for?
Change the subtraction sign to addition
3 - (-14)
17
What is the absolute value of 8?
-15 + -8=
-23
69+(-34)
35
What is the third rule of subtracting integers? What does the second C stand for?
Change the second number to it's opposite
-29-(-21)=
-8
What do you add to -2 to get 0?
2