99 + (9/9) = 100
9+9-9/.9=8 here u go
(9+9)/6 if you flip 9 upside down, you get 6. 9+9=18. 18/6 = 3 900913
99+9/9=100
99 divided by 0.99
99/9 + sqrt(9) = 11 + 3 = 14
99 + (9/9) = 100
If you mean only using nines then 99.
9=10
9+9-9/.9=8 here u go
Multiplication because 4 times 9 = 36
(9+9)/6 if you flip 9 upside down, you get 6. 9+9=18. 18/6 = 3 900913
101
3 Nines in an Emergency Call
99+9/9=100
99/9=11
99/9 + 9 = 20