早く、学校づくりへ動けたらという思いが溢れます。
This arithmetic work is the 4th grade of Japanese primary school. Some years ago, the ratio problem was carried in a 6th grade textbook. This work is essentially the ratio problem. Mmmm~
Japanese parents! Please watch the textbook of children, and solve the problem. And talk to your children honestly. The children will be saved and cheer up.