Operation E
Add and subtract fractions with unlike denominators (e.g., 2 and 7) using models and symbols
Additional Prompts
Out of one pan of brownies Josef ate 1⁄4 and Pat ate 1⁄6. What fraction of the brownies did they eat all together? Write a number sentence to explain your model.
Which sum is greater: 7⁄8 + 6⁄7 or 8⁄9 + 9⁄10
How do you know?