Which statement is true about solving multi-digit addition problems

Answer 1

There are several statements that could be true about solving multi-digit addition problems. Here are a few examples:

1. In multi-digit addition problems, the digits in each column are added starting from the rightmost column.
2. Carrying over is necessary in multi-digit addition when the sum of two digits in a column exceeds 9.
3. Multi-digit addition problems can be solved by vertically aligning the numbers and adding each column separately.
4. The sum of multi-digit addition problems can be checked by adding the individual digits and comparing the result to the given sum.