Children do math problems with their fingers. Kindergarten doesn't teach the method of ten plus one. I won't. What should I do? How to teach her is all done with her fingers, alas.
You can try to make the baby concretize all the figures. For example, 1 1-5 means that there were 1 1 apples, and five apples were eaten, so were the others. Why don't you switch to something the baby likes? Then we must work hard to form this habit and stick to it. Tell the baby that there will be a small reward if you don't use the hand index ... I hope I can help you ~