Transferring pics to a micro sd card

Hey ya'll! I'm new to this site, and out of dire frustration, I decided to post a question. I just got my qwerty phone less than a week ago, so I'm still trying to get familiar with it. I got a Micro SD card today, and have it in my phone. Now here comes the problem. I want to transfer my pictures to it, but I can't figure out if there's a way to do it without having to do each picture individually. I have over 100 pictures on there, and I keep losing track of what pictures I have already put on the card. So is there a way to batch them all together and put them on the card at once? Any help would be greatly appreciated. Thanks so much!