Answer:
10
Step-by-step explanation:
When you have a smaller equation, and you need to do quick math, sometimes using your fingers is the easiest way if you don't want to use a calculator, because it takes too long to pull it out. So, for this equation, you'd hold up 5 fingers on one hand, then count on another 5 fingers to get your answer: 10.
Another way you could do this if you needed to show work is to write down 5 ones like this: 1, 1, 1, 1, and 1. Then, you take all of those and add another 5 ones: 1, 1, 1, 1, and 1. Slowly, you can count all of the ones, combining them all to get your answer, which is 10.
I hope that this helps.