Lesson 1, Topic 1
In Progress

Lesson 7 How to Add Fractions and Practice & Assessment

Raquel February 11, 2023

In this lesson, I will explain how to add fractions.


  1. Find a common denominator (use LCM – Least Common Denominator).
  2. Make equivalent fractions.
  3. Add the numerators and whole numbers. Use the same denominator.
  4. Reduce or simplify to get the fraction in the lowest terms. If the final answer is an improper answer, be sure to explain in the assessment how to simplify the answer (Lesson 5). If it’s a proper fraction that needs to be reduced, be sure to explain in the assessment how to reduce the answer (Lesson 5). If the answer doesn’t need to be reduced or simplified, then state in your assessment, “That is the final answer because it doesn’t need to be reduced or simplified.”

Sample Assessment for Adding Fractions

To add 3 and 7/8 with 6 and 3/4, you have to find the common denominator first. The common denominator of 8 and 4 is 8 because when you say the multiples of 8, you only get to the first one and when you say the multiples of 4, you get to the second one, which is 8. Then, use the common denominator 8 to find a new numerator of the second fraction because the first fraction already has an 8. The numerator becomes a 6 because you multiply it by 2. The new fraction to be added is 6 and 6/8. Now, when you add the two numerators and the whole numbers, you get 9 and 13/8. To finalize the problem, simplify the answer by dividing the numerator by the denominator and add the quotient to the whole number and the remainder as the new numerator to get 10 and 5/8.

ACTION STEP: Practice adding fractions on the worksheets from Unit 4 until you can complete one whole worksheet in less than 20 minutes with no more than 2 incorrect (8 must be correct). The first 5 worksheets are without whole numbers. Try those once or twice and then move to the worksheets with the whole numbers. Those are the ones I will assess.