1. Students visit the Science and Technology Museum. Each bus carries 2/9 students of the whole school, and three buses carry a few students of the whole school.

2. It takes 5/8m colored rope to make a Chinese knot. Xiaohong made 16. How many meters of colored rope did she use?

3. Students make sailing model, each model needs canvas 1/25m2, and how many square meters do five models need canvas?

There are 36 children in the kindergarten, and each child eats 1/2 moon cakes. How many moon cakes does a * * * eat?

Dad is 36 years old, and Yun Yun's age is 1/4. How old is Yun Yun this year?

6. A triangular plot with a base of 5 1 m and a height of 10/ 17. What's your height? What is the area of this land?

7.2 hours 1/2, 2/3, 3/4, how many minutes is 4/5?