CLASS-7
ADDITION OF INTEGERS

Addition of Integers

RULES –

1) To add positive integer +x, move x unit to the right of the given integers. 

2) To add negative integer –x, move x units to the left of the given integers.     

To add a negative integer to a given integer, move to the left of the given integer by as many unit distance as the absolute value of the integers to be added. From (+4) we move to 3 unit to the left and arrival at 1.

Then  (-3) + ( 4) =  1 

Add a positive integer to a given integer, move to the right of the given integer by as many unit distances as the absolute value of the integer to be added. From (+3) we move 5 units to the right and arrive at 8.

Then  (+3) + (+5) = 8