英语翻译Elizabeth had been very attentive in her math class, but

英语翻译
Elizabeth had been very attentive in her math class, but she still wasn't certain if she understood the concepts of negative numbers. She knew that all negative numbers are less than zero and that all positive numbers are greater than zero. She was having trouble with adding positive and negative numbers together, though. Do you know how to add positive and negative numbers? What is the sum of negative two and nine?
Timothy collects aluminum cans and takes them to the recycling center every week. He put recycling boxes in all the classrooms, the cafeteria, and the teachers' lounge. He put a sign on each box asking people not to put anything but aluminum cans in them. Every week, though, Timothy finds objects other than aluminum cans in the recycling boxes. He estimates that ten percent of the weight of the material in the boxes is non-recyclable junk. The total weight of all the items collected in the recycling boxes this week was one hundred thirty-four pounds. What was the weight of the aluminum cans, rounded to the nearest tenth pound?
We were choosing teams for baseball. It was a sunny day. Mrs. Brown said everyone who was wearing blue or orange would be on one team. Everyone wearing red or yellow would be on the other team. There were eighteen girls and fourteen boys in the class. Three people were wearing red, four people were wearing yellow, and eight people were wearing blue. If everyone else was wearing orange, how many people were wearing orange?
Rebecca has a hobby of taking pictures. One sunny day, she took a picture of a mouse in the field. She knew this picture would earn her a prize. It took her 29 minutes to drive to the field, 31 minutes to set up and take the picture, and 31 minutes to drive back home. How much time did Rebecca spend on her hobby that day?
The ape hid in the corner of his cage. There was a tiny mouse in his cage and he was afraid. The ape began to worry. What if the mouse had little mouse children? What if he had grandchildren? What if he brought his whole family over? The mouse had a wife and eight sons. Each son had a wife and five children. If the mouse brought his whole family, how many mice would be in the ape's cage?