Decimal Subtraction: Solve 113.1 - 102.32 Using Vertical Format

Circle the correct answer to the following exercise:

To avoid confusion in solving the exercise, we will first add the digit 0 to the number 113.1 in the following way:

$113.10\\-102.32\\$

Now let's solve the exercise in order:

Let's subtract the hundreds after the decimal point:

$0-2=$

Since we cannot subtract, we'll borrow ten from the tenths digit after the decimal point and get:

$10-2=8$

Let's subtract the tenths after the decimal point, remembering that we borrowed ten, so we get:

$1-1-3=0-3$

Since we cannot subtract, we'll borrow ten from the hundreds digit of the whole number and get:

$10-3=7$

Finally, let's subtract the whole numbers before the decimal point accordingly.

Remember that we borrowed ten from the hundreds digit, so:

$3-1-2=0$

$1-0=1$

$1-1=0$

And we get:

$113.10\\-102.32\\010.78$