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how do we add or subtract decimal? its the same thing as using regular subraction and addition. Example: 12.4 +8.1 ______ =20.5 The same in subtraction! Just keep the decimals alligned!

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16y ago

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-to add or subtract decimals, line up the decimal points

-add or subtract the same way you do with whole numbers

ex: 12.4

+8.1

______

20.5

You can also do this strategy:

2.0

+6.0

_____

8.0

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Wiki User

14y ago
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Q: How do you add or subtract decimals?
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