1. Rational Numbers Essential Question: What do we need to do before we can add or subtract fractions? Unit 2 day 8

2. Rational Numbers  Vocabulary:  Numerator:  Denominator:  Least common multiple (LCM):  Common denominator:  Least common denominator (LCD)  Reciprocal Number on top: part of the whole Number on bottom: the whole (Divisor) Is the smallest positive number that is dividable by both numbers Same denominator LCM of the denominators of a set of fractions multiplicative inverse: flip the fraction

3. Steps to Adding and Subtracting fractions:

4. Need a Common Denominator:

8. Practice:

9. Summary:  Write a sentence: What do we need to do before we can add or subtract fractions?