18
copyright©amberpasillas2010
| Date post: | 03-Jan-2016 |
| Category: |
Documents |
| Upload: | andrew-barnett |
| View: | 216 times |
| Download: | 0 times |
copyright©amberpasillas2010
copyright©amberpasillas2010
Integer Addition Rules If the signs are the SAME Add the numbers. The sign stays the
same.4 + 3 = -4 + -3 =+ + + + + + +
7 _ _ _ _ _ _ _-7
copyright©amberpasillas2010
Integer Addition Rules If the signs are DIFFERENT
Subtract the numbers. The “larger number” determines the sign of the answer.-9 + 5 =
9 - 5 = 4Subtract the numbers
-4 _ _ _ _ _ + + + + +
_ _ _ _
Answer -4 because you started with more negatives
copyright©amberpasillas2010
3 - 2 1) Put in 3 2) Take away 2 3) You are left with 1
= 1 + +
+
Subtract Integers
copyright©amberpasillas2010
Subtract Integers3 - -2 1) Put in 3
2) You can’t take away –2 so add 2 zeros3) Take away -24) You are left with +5
= 5+ + +
- - + +
copyright©amberpasillas2010
Subtract Integers
-3 - -2
1) Put in -32) Take away -2
3) You are left with -1
= -1_ _
_
copyright©amberpasillas2010
Subtract Integers
-3 - 21) Put in -32) You can’t take away 2 so add 2 zeros3) Take away +2 4) You are left with -5
= -5_ _ _
+ +
_ _
copyright©amberpasillas2010
Subtract IntegersKeep the first number and add the opposite.
5 – 6 5 – 6 Is the same as = -1
SUBTRACT = PLUS CHANGE!
copyright©amberpasillas2010
Subtract IntegersKeep the first number and add the opposite.
SUBTRACT = PLUS CHANGE!
4 – (– 2) Is the same as 4 – (– 2) = 6
copyright©amberpasillas2010
Subtract IntegersKeep the first number and add the opposite.
SUBTRACT = PLUS CHANGE!
-3 – 1 Is the same as -3 – ( 1) = -4
copyright©amberpasillas2010
Multiply Integers2(3) = Add 2 groups of positive 3.
+ + + + + + = 6
2(-3) = Add 2 groups of negative 3._ _ _ _ _ _
= -6
copyright©amberpasillas2010
Multiply Integers
-2(3) = Take away 2 groups of positive 3.+ + + + + +_ _ _ _ _ _
-2(-3) = Take away 2 groups of negative 3.+ + + + + +_ _ _ _ _ _
= -6
= 6
copyright©amberpasillas2010
Divide IntegersWhen determining the sign, the rules of multiplying integers are the same for dividing integers.
If the signs are the same, the answer is positive.- 64 - 8 =
8
copyright©amberpasillas2010
Divide IntegersWhen determining the sign, the rules of multiplying integers are the same for dividing integers.
If the signs are different, the answer is negative.- 8 4 = -2
copyright©amberpasillas2010
Multiply & Divide IntegersWhen good things, happen to good people, that’s good!
+ • + = +When bad things, happen to bad people, that’s good!
– • – = +When good things, happen to bad people, that’s bad!
+ • – = –When bad things, happen to good people, that’s bad!
– • + = –
copyright©amberpasillas2010
Aren’t integersinteresting?
Take out yourStudy Guide!
copyright©amberpasillas2010
#16
1) -3 - - 10 =
2) +6 - - 9 =
3) -4 - -7 =
4) 6 - 8 =5) -3 - - 12 =
6) -7 - 12 =
7) 5 - -18 =
7 153-2
9-19 23
Keep the first integer and add the opposite!
TRY THES
E!
copyright©amberpasillas2010
-3 + 5 =
-3 - 5 =
+3 + 5 =
+3 - 5 =
+2
-8
+8
-2
-15 + 6 =
-15 - 6 =
+15 + 6 =
+15 - 6 =
-9
-21
+21
+9
2 3
4 8
6(4)
6
32
24
# 17
10 2
36 ( 9)
27 ( 3)
-5
+4
-9
