There are also many math problems in the process of going upstairs and downstairs. Mathematics in stairs, problems similar to climbing stairs in daily life, the number of sections of sawn wood and the time to ring the bell are all special problems.
1, the hierarchical problem encountered in climbing stairs is mainly to understand that several floors are different from several floors of stairs. From the ground floor, there are more floors than stairs 1. Namely: number of buildings = number of stairs+1 number of stairs = number of buildings-1.
2. The problem of the number of sections sawed into wood is that the number of sections sawed into wood is more than the number of times sawed 1. Namely: number of segments = times+1 times = number of segments-1.
3. The main problem of ringing the bell is that the number of ringing the bell is more than the interval between ringing the bell 1. Namely: times = interval number+1 interval number = times-1.