For problems 1-5 rewrite the problems vertically (one underneath the other) in your notebook. Then find the sum

Question

9.1 + 7.21

Answer 1

To rewrite the problem vertically for addition:

   9.10
 + 7.21
 --------

Now, we can find the sum:

   9.10
 + 7.21
 --------
  16.31

The sum of 9.1 and 7.21 is 16.31.