A mixed number contains both a whole number and a fraction.
As you can see, the large number (the whole number), indicates that he ate 2 entire candy bars.
Let's look at a few more examples of mixed numbers.
What mixed number is shown in this picture?
There are 3 full glasses of water, so our whole number is 3.
Our whole number is 1 because she ate 1 full apple.
Since 4 is the whole number, we must draw and color 4 whole boxes.
Then for the fractional part, 3 is the denominator so we draw one more box and split it into 3 pieces.
2 is the numerator, so we must color 2 of those parts.