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Here are some tips for Decimal Subtraction, which aligns with California state standards:

Decimal Subtraction


You must know how to do long subtraction before doing this topic.
To review Long Subtraction, see here.

Decimal subtraction is like decimal addition. You must line up the decimal points before subtracting.


Example:

Subtract.
53.353
- 25.3566
-----------

Step 1: Align the decimal points.
We add a 0 after 53.353 to make 53.3530 to make it easier when doing the subtraction.
53.3530
- 25.3566
-----------
?

Step 2: Subtract.
4 12 12 14 12 10
5 3 .3 5 3 0
- 2 5 .3 5 6 6
-----------------
2 7 .9 9 6 4

The answer is

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