I hope this helps you 
A=Area
b=base
h=height 
A=b×h/2
A=1/2.b+1/2.h
        
                    
             
        
        
        
"Alaina’s sugar cookie recipe calls for 2 1/4
cups of flour per batch. If she wants to make 2/3
a batch of cookies, how much flour should she use?"
1 1/2 Cups, if she wants to make less than the original recipe, she would need less flour, you have to divide.
 
        
                    
             
        
        
        
Answer:
1/2 , .5 , 50%
Step-by-step explanation: