1. Xiaohua is 7 years old and grandpa is 77 years old. How many years later, Xiaohua's age is 1/2 of his grandfather's age?
Xiaoming's mother bought five apples, and Xiaoming took 1 of them. How many apples can Xiaoming's parents and himself take?
3. Students line up to do exercises. There are three people in front of Xiaoming and four people behind him. How many people are there in Xiaoming's team?
4. A frog wants to jump on the wellhead15m high. It can jump 3 meters up or 2 meters down at a time. How many times does a frog have to jump before jumping on the wellhead?
Xiaohua bought three apples and four bananas in the supermarket, and he paid 10 yuan. If the price of each apple is 2 yuan and the price of each banana is 1 yuan, how much should Xiaohua get back?
6. Xiaoming and Xiaohua have 18 colored pencils. If Xiaoming gives Xiaohua three colored pens, the number of colored pens is equal. How many colored pencils do Xiaoming and Xiaohua have?
7. Xiaohong has five books, Xiao Li has four books, and they both have seven books. They need to divide the seven books equally. How many books should Xiaohong and Xiaoli take?
8. Xiaohua bought three toy cars and 1 toy balloons in the store, and he paid 10 yuan. If the price of each toy car is 3 yuan and the price of each toy balloon is 2 yuan, how much should Xiaohua get back?
9. Xiaoming and Xiaohua jump rope together. Xiaoming jumped 100 times and Xiaohua jumped 80 times. How many times did Xiaoming and Xiaohua dance?
10. A kitten wants to jump into a tree with a height of 10. It can jump up or down 2 meters to 1 meter every time it jumps. How many times does a kitten have to jump to the top of a tree?
1 1, Xiaoming and Xiaohua are playing a puzzle. They have 20 puzzles. If Xiaoming gives Xiaohua five puzzles, then the number of puzzles is equal. How many puzzles do Xiaoming and Xiaohua have?
12, Xiaohong has six pencils, Xiaoli has five pencils, and they both have eight pencils. They need to divide eight pencils equally. How many pencils should Xiaohong and Xiaoli get?
13, Xiaohua bought two teddy bears and three toy cars in the store, and he paid 10 yuan. If the price of each teddy bear is 4 yuan and the price of each toy car is 3 yuan, how much should Xiaohua get back?
14, Xiao Ming and Xiaohua draw together. Xiao Ming draws 10 pictures, and Xiaohua draws 8 pictures. How many pictures did Xiaoming and Xiaohua draw?
15. A little fox wants to jump on a branch 8 meters high. It can jump 3 meters up or 2 meters down at a time. How many times does the fox have to jump to the top of the branch?