1, the little white rabbit pulled out five radishes, the little black rabbit pulled out seven radishes, and the little gray rabbit pulled out four radishes more than the little white rabbit. Q:

(1) How many pieces did the little black rabbit pull out than the little gray rabbit?

(2) How many carrots did they pull out?

There are 27 books in the shop. On the first day, 12 copies were sold, and on the second day, 5 copies were sold. How many copies were sold in two days? How many books are there now?

There are 2 1 children in the car, and now there are 13 children. How many children got off the bus?

4. Take 15 cars first, and then take 9 cars. A * * *, how many cars have been driven away?

5. Mom and Dad took Mix to the movies. An adult ticket 10 yuan is twice as much as a child ticket. How much does dad have to pay?

6. Min Min wants to buy a book and a brush, a book 3 yuan and a brush 5 yuan, and his mother gives it to him 10 yuan. Is that enough?

7. Mom bought some sugar. After Dingding Jr. ate half of it, Light Light Blue ate the remaining half, leaving six pieces of sugar. How many sweets did mom buy?

8. Children line up. From the front, Xiao Pang ranks sixth, and there are nine children behind him. How many children are there?

9. There were 12 children in the car, and now there are 26 children. How many children got on the bus?

10. The teacher took the children to the zoo. Boys 13, girls 15. How many tickets should the teacher buy?