a full recipe calls for 3 1/2 cups of flour.....so if she wanted to make half of the recipe, she would need half of the flour in a full recipe.....so she would need half of 3 1/2.
turn ur mixed number into an improper fraction...3 1/2 = 7/2
(7/2) / 2 .....when dividing with fractions, flip what u are dividing by, then multiply
(7/2) / 2 = 7/2 * 1/2 = 7/4 = 1 3/4 cups of flour are needed for half a recipe
