Well, for 6,7 they want you to round 0.51 and 1.17 to the nearest tenth.
To round to the nearest tenth, you are basically shortening it for example
0.248 rounded to the nearest tenth would be 0.2--------- you take the tenth place in this case, and look at the number on the right, if it's 5 or more, move the tenth place number up one, for example the tenth place one would be 3 but stays the same If it's 4 or below. Ask your teacher for additional questions don't axe him/her
6- 0.5
7- 1.2
8- 10
9- 11.9
PEACE