A fair coin is flipped 10 times. What is the probability that the heads turn up 8 or more times (8,9,10)?

My approach:

Probability that H turn up 8 times:

Probability that H turn up 9 times:

Probability that H turn up 10 times:

I'm not 100% sure what to do now. Do I simply add the individual probabilities to get the total?

Thanks!