line up your numbers on top of each other in least to greatest form and add the numbers starting from the right to the left side.
example:
54 first add these three
34 4+4+3= 11
+ 23 then bring the first 1 in 11 on top of 5 and then add all 3.
_____ 1+5+3+2=11 your final answer will be 111
111
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Inverse and idenity
The rules for addition are as follows:The sum of two negative integers is a negative integerThe sum of two positive integers is a positive integerThe rules for subtraction are as follows:If they are two positive numbers, do it normallyIf there is a negative and a positive ,change it to addition and switch the SECOND integer sign
Addition, subtraction, multiplication and division
Properties of addition may be defined as the mathematical rules that are obeyed by the binary operation of addition, defined over some set.