Question

There are 11 red and blue

notebooks for sale. Seven of
the notebooks are blue. How
many red notebooks are
for sale?

Answer 1

There are 11 notebooks and 7 are blue. So subtract 7 from 11.

11 - 7= 4
so the answer is

4 red notebooks

Answer 2

4 because 11-7=4 is it subtraction?