Multi-choice problem: Continue writing the next sentence in this paragraph:

How to add fractions
Check the denominators (bottom numbers) of each fraction.
If they are the same number, then you're dealing with fractions that have the same denominator. If not, skip to the section down below.

Pick from:
[1]. When you're finished, double align the fraction, and begin working with the organization of the denominators. Highlight numbers if they're the same size, then highlight them if they're small..
[2]. Find the denominators for the fractions. If the fractions are the same number, you can add them together or do the same calculation..
[3]. Multiply the fractions by 10. If fractions have the same denominator, simply multiply them by 10..
[4]. Here are two example problems we'll work on in this section. By the last step, you should understand how they were added together..
[4].