Solve Decimal Subtraction: 19.28 - 17.99 Step by Step

Let's solve the exercise in order:

Let's subtract the hundreds after the decimal point:

$8-9=$

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

$18-9=9$

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

$2-1-9=1-9$

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

$11-9=2$

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

Since we borrowed ten from the tens digit of the whole number we get:

$9-1-7=1$

$1-1=0$

And we get:

$19.28\\-17.99\\01.29$

We can ignore the 0 before the 1, so we got the number: 1.29