How to paste to multiple cells as a suffix?

I am trying to paste to multiple cells as a suffix for example

I have cells A1 to A5 with names of images

.....A

1 image_name_1
2 image_name_2
3 image_name_3
4 image_name_4
5 image_name_5

How would I quikly add ".jpg" to the end of each word in multiple cells at once?