## Whole Number Addition and Subtraction

1– Line up the numbers.
2– Start with the unit place. (ones place)
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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