User:Anil Kotagiri

Anil Kotagiri (talk) 18:12, 24 July 2015 (UTC)

The Symbol '+' does not indicate addition and '-' not the Subtraction. Many of the students assume that + indicates Addition and - indicates Subtraction. In Fact '+' indicates a Positive Quantity and '-' indicates a ?Negative Quantity

The below are the points which can be remembered by children to avoid confusion in addition and Subtraction

Illustration with Example:

1+2 => +1+2   => +3   ( Both are + Quantities then Add, the result would have the sign of the weighted quantity )

-1-2  => -3   ( Both are - Quantities then Add, the result would have the sign of the weighted quantity )

1-2 => +1-2   => -1   ( One is + Quantity and the other is - Quantity then Subtract,the result would have the sign of the weighted quantity )

-1+2  => +1   ( One is - Quantity and the other is + Quantity then Subtract,the result would have the sign of the weighted quantity )

Children Can By-heart as below


 * All are Positive add, put big symbol
 * All are Negative subtract, put big symbol
 * One is Positive and one is Negative, Subtract put big symbol