Who will provide a math joke?

The fourth class 1, in the morning 1 1 half past ten, A is hungry and doesn't want to attend class. He sat in his seat, thinking about beef and bread. The math teacher found him absent-minded and asked him, "What would happen if the decimal number 1. 130 moved one place to the right?" A student replied without thinking, "there will be lunch!" " I visited the weather station and saw many latest weather forecasting instruments. After the visit, I asked the stationmaster, "You said there was a 75% chance of rain. How did you calculate it?" Without much thought, the stationmaster replied, "That is to say, there are four people here, and three of them think it will rain. "3. Numbers don't lie. ""Numbers don't lie, "said the teacher. If it takes twelve days for one person to build a house, then twelve people only need one day. One hour is enough for 288 people. "A student went on to say," Seventeen thousand two hundred and eighty people only need one minute, and 1,036,800 people only need one second. In addition, if it takes six days for one ship to cross the Atlantic, it takes six ships a day. Four cups of 25-degree water add up to boiling water! Numbers don't lie! "4. Zaizai came back from school happily and asked his mother," Where is Dad? " Mother saw Zaizai's excitement and asked strangely, "Is Dad at home? What do you want from dad? " "I asked my father for fifty cents." "Why? "mom asked." Before taking the math test, my father said to me,' If I get a score of 100, I'll get 1 yuan, and 80 will be given to 8 cents.' Today, I got 45 points in math. "Aberdeen replied. My mother was surprised and asked, "What! Mathematics is only 45 points? " Zaizai proudly said, "Yes, it must be rounded off in mathematics, so Dad has to pay 50 cents. "