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Vocab
Adding Integers
Subtracting Integers
Mix
Random Gain/Loss
100
Sign of a number
Refers to if a number is postive or negative.
100
-5 + 9
4
100
-4 - 6
-10
100
-2 - 3
-5
100
Loss
-100
200
Integer
Positive and Negative Numbers. Not decimals or fractions.
200
-12 + 5
-7
200
4 - 11
-7
200
-10 + 30
20
200
Gain
+200
300
Addition Rule
Same Sign - Add and keep the sign Different Sign - Subtract and keep the sign of the larger number.
300
-16 + (-17)
-33
300
15 - (-7)
22
300
21 - (+5)
16
300
Loss
-300
400

Subtraction Rule

Add the opposite.

Keep, Change, Change

400
89 + - 15
74
400
-27 - (-3)
-24
400
(- 15) - (-35)
20
400
Loss
-400
500

Explain Add the opposite.

Keep the first number, change to addition, change the second number to opposite sign.

500
-16+18+-17
-15
500
-10 - 11 - (-3)
-18
500
-10 + (-2) - 5
-17
500
Gain
+ 500