To find out how many cups of flour are needed for 1 loaf of challah bread, we can divide the total amount of flour used for 3 small loaves by the number of loaves.
The baker used 3 1/2 cups of flour to make 3 small loaves of challah bread.
To find the amount of flour needed for 1 loaf, we divide the total amount of flour used (3 1/2 cups) by the number of loaves (3).
3 1/2 cups ÷ 3 loaves = 1 1/6 cups of flour per loaf.
Therefore, 1 loaf of challah bread requires approximately 1 1/6 cups of flour.