A. Find the sum or difference. Simplify your answer.

1.) 8 2 + 3 1 =________
5 4

2.) 7 3 + 5 2 =________
6. 5

3.) 8 4 - 7 1 =________
8 5

4.) 7 2 - 4 1 =________
5 4

5.) 3 2 + 4 3 =________
6 5​