Interactive resource
Adding like fractions
Arithmetic. Same denominator: keep it, add numerators. a/n + b/n = (a + b)/n. Free interactive GeoGebra resource — adjust parameters in the browser.
Overview
Same denominator: keep it, add numerators. a/n + b/n = (a + b)/n.
Explanation
Like denominators: parts are the same size, so keep the denominator and add numerators.
Formula: a/n + b/n = (a + b)/n.
Example: 3/8 + 2/8 = 5/8. If a + b ≥ n the sum is at least 1.
How to use
Adjust the common denominator and two numerators; bars merge into the sum.