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Adding $\frac{5}{18} + \frac{7}{18}$

Case Study

Add and simplify the fractions. Show the sum before and after simplifying.

Case context: $\frac{5}{18}+\frac{7}{18}$

Question: Add and simplify the fractions. Show the sum before and after simplifying.

Sample answer: Add the numerators: $\frac{5+7}{18}=\frac{12}{18}$ . Divide the numerator and denominator by the common factor $6$ : $\frac{12}{18}=\frac{2}{3}$ .

Key points:

Add the numerators to get $\frac{12}{18}$ .
Use the common factor $6$ .
Simplify to $\frac{2}{3}$ .

Rubric: Full credit requires $\frac{12}{18}$ , the common factor $6$ , and the simplified answer $\frac{2}{3}$ .

Updated 2026-08-11

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Add and simplify: $\frac{5}{18} + \frac{7}{18}$
Add the fractions $\frac{5}{18}$ and $\frac{7}{18}$ . Match each part of the calculation to its correct value.
Arrange the steps in the correct order to add and simplify: $\frac{5}{18} + \frac{7}{18}$
The sum of $\frac{5}{18}$ and $\frac{7}{18}$ , expressed in simplest form, is $\frac{2}{3}$ .
What is the result of adding $\frac{5}{18} + \frac{7}{18}$ before any simplification occurs?
Describe the steps to add the fractions $\frac{5}{18}$ and $\frac{7}{18}$ and simplify your answer.
Add and simplify the fractions. Show the sum before and after simplifying.
The greatest common factor of $12$ and $18$ is _____.
Complete the factorization: $12=6\cdot,?$

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