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!
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 <em>distributive property</em>. 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.
A. Rotation 90º clockwise about the origin B. Rotation 180º about the origin C. Rotation 90º counterclockwise about the origin D. Reflection across y=x
