We can split the numbers and then multiply them. For example, multiply 81 and 24.
Splitting the number 81 = 80 + 1
The given multiplication can be written as (80 + 1) × 24 = (80 × 24) + (24 × 1)
Now, 24 × 80 = 1920 and 24 × 1 = 24
Add both the numbers 1920 + 24 = 1944
∴ 81 × 24 = 1944