Add Tens
Let's find the sum of 41 and 20.
41 + 20 = ?
Here,
41 can be written as 4 tens and 1 one.
20 can be written as 2 tens.
So,
41 + 20 = 4 tens + 1 one + 2 tens
Now, add tens.
4 tens + 1 one + 2 tens
= (4 tens + 2 tens) + 1 one
= 6 tens + 1 one
= 61
So, 41 + 20 = 61.