Final answer:
The sum of 50 and 30 is 80, which is found by adding the tens column (5 + 3) to get 8 tens, equivalent to 80.
Step-by-step explanation:
When adding two numbers together, such as in the question What is 50 + 30, you simply add the two numbers to find the sum. In this case, 50 plus 30 equals 80.
To perform the addition, you align the numbers by their place value:
Then, you add the numbers in each column starting from the right. The 0 in the ones place for both numbers sums to 0, and the 5 tens plus 3 tens gives us 8 tens, which is 80.
Therefore, the answer to What is 50 + 30 is 80, which corresponds to option B.