Adding and Subtracting Fractions with Unlike Denominators

The top number of a fraction is called the _________________

What is a quick and reliable way to make equivalent fractions when adding or subtracting two fractions with unlike denominators?

ESTIMATE the sum: $$2\frac{1}{4} + 1\frac{5}{8}$$

$$\frac{5}{9} - \frac{3}{6} =$$

ESTIMATE the sum: $$\frac{9}{10} + \frac{5}{6}$$

What is the bottom number of a fraction called?

How do you find a common denominator for adding fractions?

What is an equivalent fraction?

What is the first step in adding fractions with unlike denominators?

If you have $$\frac{1}{3} + \frac{1}{6}$$ , what is the common denominator?