Drawing is more intuitive. The problem is that black cats and flower cats are compared with white cats, so draw a paragraph to represent white cats, then a short paragraph to represent black cats, and then a long paragraph to represent flower cats. Mark that there are two fewer black cats than white cats, five more flower cats than white cats, and the total number of three kinds of cats is 24, so that children can understand that the number of white cats is (24+). Attached drawings;