2. Xiaoqing drew nine pictures twice, five for the first time, and how many for the second time?

3. There are 18 apples and pears, 9 apples and how many pears in Xiaohong's family?

4. The school wants to send 20 boxes of stationery to primary schools in mountainous areas, and has already sent 10 boxes. How many more boxes do you want to send?

5. There are 15 cabbages at home. I ate five cabbages. How many more?

6. There are 9 trees on both sides of a road. A * *, how many trees have been planted?

7. Nine cars were taken from the parking lot, and there were five left. How many cars are there in the parking lot?

8. Eight big cars and the same number of cars were taken away from the parking lot. How many cars have been driven away twice?

9. There are eight footballs in the school gymnasium, and seven have been bought. How many are there now?

10, learning from lei feng, the group repaired 8 chairs in the morning and 12 in the afternoon. How many chairs have been repaired in one day?

1 1, Xiaoming and Xiaoli took 35 photos, Xiaoli took 20 photos, and Xiaoming took a few photos.

12. There are 20 birds in the tree. First, seven birds flew away, and then six birds flew away. How many birds have flown away?