First grade is basically addition and subtraction. I can pay for it myself Let me give you some advice first.

1, Xiaohong did 20 questions, 5 were wrong and several were right.

2. Xiao Qiang has 10 apples. I ate seven apples. How many more are there?

3. The store has 15 fans, and 5 fans have been sold. How many fans are there now?

There are eight cars left in the parking lot, and there are nine left. How many cars are there in the parking lot?

5. Xiaoming reads a book, 50 pages. He has read page 2 1. How many pages does he have left?

6. Xiaohong has 8 erasers and Xiaoming has 15 erasers. How many erasers do they have?

7. There are 13 cars in the passenger station, and three cars have already left. How many cars are there?

8. Children make paper-cuts with 8 pieces of red paper and the same amount of yellow paper. How many sheets of paper did they use?

9. There are 9 horses in the racecourse, and 5 more will come soon. How many horses are there on the racetrack now?

Let me give you a few examples first. Unskilled children can do it by themselves or buy exercises to do it.