### Instruction: Find $2.5-0.32.$.### Response: I want to subtract one decimal number from another, so I need to align the decimal points and subtract each column from right to left.
I can write the problem as $2.50-0.32$ to make the columns clearer.
In the rightmost column, I have $0-2$, which is negative.
I can't have a negative digit in the result, so I need to borrow one from the next column.
That means I reduce the 5 in the next column to 4, and add 10 to the 0 in the rightmost column.
Now I have $10-2=8$ in the rightmost column.
In the next column, I have $4-3=1$.
In the leftmost column, I have $2-0=2$.