Adding Integers
6 + (-1) =
5
2 - (-9) =
11
-8 x 6 =
-48
56 divided by (-8)
-7
Write down the rules we have for adding/subtracting integers and write the rules we have for multiplying and dividing integers (table works for this as well).
+/-
1. Simplify Signs
2. Same Sign: Add numbers, keep sign
3. Different Signs: Subtract numbers, keep sign on larger number.
Multiply/Dividing
Even amount of negatives: Positive
Odd amount of negatives: Negative
3 + (-12) =
-9
-1 - 17 =
-18
10 x (-9) =
-90
-81 ÷ -9 =
9
-17 x (-13) x 3 =
663
-2 + 5 =
3
-8 - (-13) =
5
-7 x (-12) =
84
-15 ÷ 3 =
-5
-756 ÷ -9 ÷ (-6) =
-14
-13 + 4 =
-9
-11 - (-6) =
-5
11 x (-14) =
-154
-306 ÷ 18 =
-17
125 + (-284) + 64 =
-95
-7 + (-15) =
-22
4 - 16 =
-12
-23 x (-24) =
552
-135 ÷ -15 =
9
-200 - (-145) - 33 =
-88