Explain how finding the least common multiple (LCM) helps when adding fractions with unlike denominators.

The LCM is used as the common denominator, making it easier to work with smaller numbers and reducing the need for simplification at the end.

Adding Fractions Lesson Plan for Grade 6th Grade

I can add fractions with unlike denominators by finding a common denominator.

1
When adding fractions with unlike denominators, the first step is to find a common denominator by determining the least common multiple of the denominators.
2
To rename a fraction, you multiply both the numerator and the denominator by the same number to obtain an equivalent fraction with the common denominator.
3
After renaming fractions with a common denominator, you can add the numerators and keep the denominator the same, then check to see if the answer can be simplified.