Make it sound personal with words like "i":

To solve 5 multiplied by 1/3 as repeated addition, you need to add 1/3 to itself 5 times. This means you add 1/3 +1/3 + 1/3 + 1 /3 + 1/3. When simplified, the answer is 5/3 or 1 2/3.

When I solve 5 multiplied by 1/3 as repeated addition, I think about adding 1/3 to itself 5 times. So, I add 1/3 + 1/3 + 1/3 + 1 /3 + 1/3. Simplified, my answer is 5/3 or 1 2/3.