1. Addition 32 + 21 = 53 Addend - One of the numbers being added.
addend addend sum
Addend - One of the numbers being added.
Sum - The answer to an addition problem.
(The order does not matter in addition).

2. The order that you add the addends does not matter in addition
The order that you add the addends does not matter in addition. This is called the commutative property of addition.
= =

3. Partial Sums Method:
We can break addition problems into their place values before we add them to make them easier.
641
+218

4. Standard Algorithm Method:
This is a quicker method for solving addition.
641
+218

5. When you use the standard method, many times you will need to regroup numbers to a higher place value position.
238
+ 365

6. Examples: = = =

7. Practice: = =
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