Estimating Subtraction of Fractions with Unlike Denominators

The video tutorial explains how to estimate the subtraction of fractions with unlike denominators using a benchmark fraction, specifically 1/2. It introduces a problem involving Gabriella, who has 3/4 cup of soda and drinks 1/2 cup. The lesson emphasizes the importance of using benchmark fractions to predict whether the result will be more or less than 1/2. By modeling the problem, students can visualize and estimate the outcome, ensuring their answer is accurate. The tutorial concludes with a recap of the key concepts learned.

What should we consider about the answer before solving the subtraction problem?

What can we predict about the answer to the subtraction problem?