ADDITION
The process of calculating the total value of two or more numbers is called addition.
The total value is also called sum.
The symbol + ( plus ) indicates addition.
The symbol = ( equals ) indicates the sum.
1 + 1 = 2 is read as one plus one equals two
SINGLE - DIGIT ADDITION
It involves the addition of numbers between zero ( 0 ) and nine ( 9 )
Example : 2 + 4 = 6
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