Joey's dog weighs 102.45 pounds. jimmy's dog weighs 25.38 pounds less.
how many pounds does jimmy's dog weigh?

 1.Since 5 is less than 8, borrow 1 from the next column to make 15.

 2.Calculate 15 - 8, which is 7.

 3.Calculate 3 - 3, which is 0.

 4.Since 2 is less than 5, borrow 1 from the next column to make 12.

 5.Calculate 12 - 5, which is 7.

6..Calculate 9 - 2, which is 7.

7.Therefore, 102.45 - 25.38 = 77.07.