Addition And Subtraction

Q1

What is the rule to add integers?

The rules to add integers are:
+ and + is Sum
– and – is Sum with ‘-’ sign
+ and – is difference with the sign of highest value

Q2

What is the rule for the subtraction of integers?

The rules to subtract integers are given here with examples:
-2 – 3 = -5
2 – (-3) = 5
2 – 3 = -1
3 – 2 = 1

Q3

Are the rules of addition and subtraction the same as rules for the multiplication of integers?

Rules for the multiplication of integers are different from addition and subtraction rules.
Two like signs when multiplied, they result in a positive sign
Two unlike signs when multiplied, result in a negative sign.
2 x 3 = 6
-2 x -3 = 6
-2 x 3 = -6

Q4

Give examples of the addition of integers.

The examples of addition of integers are:
10 + 9 = 19
10 + (-9) = 1
-10 + 9 = -1
-10 + (-9) = -19

Q5

When two negative integers are added together, then what is the sign of resulted value?

When two negative integers are added together, the result is the sum of the two integers with a negative sign. For example,
-8 + (-4) = -8 – 4 = -12