Speed for mathematics fairy tale speed

Speed for mathematics fairy tale speed


A new story of tortoise and rabbit race
Students, you must all know the story of "tortoise and rabbit race". The proud little rabbit was left behind by the tortoise because he dozed off on the way. Today, the little rabbit came to the tortoise's house with thick skin
"Brother tortoise, open the door quickly!"
"Oh, it's sister white rabbit! She didn't come to me for a race, did she?"
"Exactly, exactly, letusgo!"
After five minutes of waiting, the result was finally revealed. The rabbit learned from the lesson of the last race and won the championship by an absolute advantage. In this race, the rabbit was far ahead. When he reached the finish line, he was 100 meters ahead of the tortoise. The tortoise was not convinced. He asked the rabbit to step back from the starting line and run again, The rabbit agreed, but still won
"Doctor, do you know what's going on?" Dr. goat pondered deeply and said, "the rabbit can run 250 meters per minute, but you can only run 20 meters per minute. When she runs 1000 meters, you run 900 meters in the same time, and the rabbit runs 1100 meters less than you run 1000 meters, so the rabbit still wins.", If I arrive at the same time as the rabbit, how many meters should I run before her? "
"Rabbit 1000 meters takes 4 minutes, and you only run 80 meters in 4 minutes, so you should run 920 meters before rabbit."
"Thank you very much. Take your time, Dr. goat..."



What is the function of fairy tales?


Through rich imagination, fantasy and exaggeration to shape the image, reflect life, ideological education for children. Generally, the plot is magical and tortuous, vivid and simple, and the description of natural objects is often personified, which can adapt to children's acceptance ability



How many pages does this book have in total?
Ha ha, it seems that there is one more section


258 pages
There are nine one digit 1-9, 180 two digit 10-99, 477 three digit, 159 pages, 159 + 90 + 9 = 258