 ## Whole Number Addition and Subtraction

1– Line up the numbers.
3– Regroup if necessary.
4– Add or subtract the tens place.
5– Continue with other digits.

Example:
$$231\ + \ 120\ = \ 351$$
$$292\ – \ 90\ = \ 202$$

##### Whole Number Addition and Subtraction - Example 1:
$$810 \ - \$$$$360$$$$\ = 450$$
##### Whole Number Addition and Subtraction - Example 2:
$$1160 \ - \$$$$290$$$$\ = 870$$
##### Whole Number Addition and Subtraction - Example 3:
$$260 \ - \$$$$140$$$$\ = 120$$
##### Whole Number Addition and Subtraction - Example 4:
$$1080 \ - \$$$$510$$$$\ = 570$$
##### Whole Number Addition and Subtraction - Example 5:
$$750 \ - \$$$$430$$$$\ = 320$$
##### Whole Number Addition and Subtraction - Example 6:
$$1380 \ - \$$$$650$$$$\ = 730$$
##### Whole Number Addition and Subtraction - Example 7:
$$1500 \ - \$$$$580$$$$\ = 920$$
##### Whole Number Addition and Subtraction - Example 8:
$$1260 \ - \$$$$870$$$$\ = 390$$
##### Whole Number Addition and Subtraction - Example 9:
$$1430 \ - \$$$$800$$$$\ = 630$$
##### Whole Number Addition and Subtraction - Example 10:
$$130 \ + \$$$$980$$$$\ = 1110$$

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