1-let's make a sandwich,how many slices of bread do we need?
not many,just two slices
2-let's make an omelette, how many eggs do we need?
not many,just two eggs
3-let's make a banana cake,how many bananas do we need?
not many,just three bananas
4-let's make a pie,how much flour do we need?
not much ,just a cup of flour