(1) is used for counting. If you ask people to count up quickly, there are few mistakes, but if you count down at the same speed without making mistakes, few people can do it. When the child is exposed and impressed, the problem is solved.
⑵ The subtraction ability is weak. You can try adding and subtracting mixed questions. For example, ask 7 8=? Ask again 15-7=? . This kind of training also helps children learn simple equations in the future.
(3) Unfamiliar with 10 or above. Then you have to strengthen your practice in this area. Practice makes perfect.
(4) Count your fingers in your mind. Try to ask questions in a short time, such as 7 8=? Ask again 7 8=? ... so that children will subconsciously recite answers to answer questions; You can also cross-ask questions, for example, first 7 8=? So 5 6=? (or 8 7=? ) 7 8=? ... so that children can get rid of counting their fingers in their hearts every time.
In short, teach children step by step, add some new things and cultivate their interest in learning. Answer questions correctly, give more rewards, and enhance children's desire to answer questions correctly. Use the right method to get twice the result with half the effort. Maybe I'm used to it! Children are like this now, but people's wisdom can't be inherited. I think you should spend more time teaching children how to calculate quickly and accurately!
Liu Lingqian Yuer