Question

this property means that reversing the order of addition will not affect the sum.
for example: 4 + 5 = 9 and 5 + 4 = 9

1. the additive identity property

this means that when 0 (zero) is added to any number the result will be that same
for example: 2 + 0 = 2

1. the additive inverse property

all positive numbers have a negative inverse. for example the negative inverse o
the additive inverse property means that when the negative inverse of any positive
sum will always be equal to 0.
for example: -5 + 5 = 0
study alert: when adding numbers with more than one digit or numbers
important to line the numbers up in a column so the numbers line up in th
side of the decimal in order to solve.
for example: 462 + 9878 = ?
462 + 9878 (8 + 2 = 10, write 0 and carry the 1 to add to the second colum

Explanation:

Step1: Align digits by place value

$$\begin{align*} &\quad\ \ 462\\ &+ 9878\\ \hline \end{align*}$$

Step2: Add ones place, carry over 1

$8 + 2 = 10$, write 0, carry 1.

Step3: Add tens place + carry

$7 + 6 + 1 = 14$, write 4, carry 1.

Step4: Add hundreds place + carry

$8 + 4 + 1 = 13$, write 3, carry 1.

Step5: Add thousands place + carry

$9 + 0 + 1 = 10$, write 10.

Answer:

10340