After reading this book, I know that there is mathematics everywhere in my life, and I have learned to use it skillfully. As long as I use my head to calculate, maybe the seemingly difficult topic will become simple and easy.
The most impressive story is Grandpa's Silver Bar. The story goes like this: Grandpa has no money to pay the rent, but the money he earned won't be available until next month, so he has to use silver bars as collateral. He reached an agreement with the landlord: "One centimeter of silver bars a day are for rent, and 3 1 cm of silver bars need to be cut into 3 1 piece within 3 1 day. Grandpa thought it was not only time-consuming, but also cut the silver bar into 366.
So, grandpa used clever calculation to cut the silver bar into five sections. Do you know how the five segments are allocated? The answer is not difficult. The five segments are 1 cm, 2cm, 4cm, 8cm and16cm respectively. On the first day, grandpa gave 1 cm, the next day he got 1 cm back and gave him 2 cm, the third day he gave him 1 cm, and the third day he gave him a cm in exchange for 1 cm and 2 cm.
There are many interesting stories, and I also saw a story about toys. The story is: put 350 toys in 3 wooden cases and 8 cartons. Is the wooden box a cardboard box? Double the size. Do you know how to install it?
In fact, the method is very simple. All cases are equal to 7 wooden cases, and 350 divided by 7 is equal to 50. There are 50 toys in the wooden box, which is just twice as big as the carton, so there should be 25 toys in the carton. Isn't that interesting? In fact, mathematics, like air, is always around us. As long as I pay attention, I will find a lot of Austrian seconds.