My brother needs help:Pls explain to him

Answer:
187
Step-by-step explanation:
if its hard adding big numbers like this break it down first add 80 and 90 witch is 170 and then add 8 and 9 witch is 17 and then add 170 and 17 and then you have your answer!
Your welcome! :3
Answer:
2) 106
4) 100
6) 103
8) 109
10) 151
12) 107
13) 187
14) 160
15) 97
16) 105
Step-by-step explanation:
Addition means to put it or add. When adding, you can do it mentally, or algorithm.
Example:
61
+36
___
97
You can also do of what it's called as a distributive property. What this does is makes your equation easier. If we were doing 61+36, simply do this:
60+1+30+6. You can add the greater numbers first and the smaller after.
Hope this helped. Please rate it.