1. Rules of
Integers

2. Rules of Integers Rule 1 Two numbers have same sign Add the numbers
Put the same sign
Rule 2
Two numbers have different sign
Subtract the numbers
Copy bigger number sign

3. Worked Examples -7 + 3 7- 3 = 4 Answer : -4 -7- 3 Answer : -10 7 - 3
Numbers have different sign
Using Rule 2 –
Subtract the numbers and copy bigger number sign
7- 3 = 4
Bigger number sign is “ – “
Answer : -4
-7- 3
Numbers have same sign
Using Rule 1-
Add the numbers and copy bigger number sign
7 + 3 = 10
Bigger number sign is “ – “
Answer : -10
7 - 3
Here we can write it as
+7 - 3
Numbers have different sign
Using Rule 2 –
Subtract the numbers and copy bigger number sign
7- 3 = 4
Bigger number sign is “ + “
Answer : +4
+7 +3
Numbers have same sign
Using Rule 1-
Add the numbers and copy bigger number sign
7 + 3 = 10
Bigger number sign is “ + “
Answer : +10

4. Try these
-5 -6
7 -10
-3 +8