Question

The sum of two numbers is 53.12. One of the numbers is 33.76. Find the other number.

Answer 1

Let the sum of two numbers be X and Y
The sum of two numbers = X + Y
= 53.12

Let the given one number 33.76 be X

Let the other number be Y then,
X + Y = 53.12
33.76 + Y = 53.12
Y = 53.12 - 33.76

Let's subtract $53.12-33.76:$

Step 1: Align the decimal numbers according to their place values one below the other.
$TO.th53.12-33.76--------$

Step 2: Subtract the numbers in the column from the right.

If needed, borrow a group of ten from the column to the left.
Finally, place the decimal point of the sum vertically below the other decimal points
$\to Y=19.36$

Hence, the other number is $\mathrm{19.36.}$