Calvin stays on the 7th floor in his building. Between each floor, there are exactly 12 stairs. If he starts from the 1st floor and climbs his way up to the 7th floor, how many stairs does he climb?

6 * 12 = ?

To calculate the total number of stairs Calvin climbs from the 1st floor to the 7th floor, we need to find the difference in the number of stairs between each floor.

Given that there are 12 stairs between each floor, we can calculate the total number of stairs as follows:

Number of stairs from 1st floor to 2nd floor: 12 stairs
Number of stairs from 2nd floor to 3rd floor: 12 stairs
Number of stairs from 3rd floor to 4th floor: 12 stairs
Number of stairs from 4th floor to 5th floor: 12 stairs
Number of stairs from 5th floor to 6th floor: 12 stairs
Number of stairs from 6th floor to 7th floor: 12 stairs

Adding up the number of stairs between each floor gives us the total number of stairs Calvin climbs:

12 + 12 + 12 + 12 + 12 + 12 = 72 stairs

Therefore, Calvin climbs a total of 72 stairs from the 1st floor to the 7th floor.

To find out how many stairs Calvin climbs from the 1st floor to the 7th floor, we need to calculate the total number of stairs.

Each floor has 12 stairs. So, if Calvin starts from the 1st floor, he needs to climb 12 stairs to reach the 2nd floor. Similarly, he needs to climb 12 stairs to reach the 3rd floor, and so on until he reaches the 7th floor.

So, to calculate the total number of stairs, we can add up the number of stairs between each floor:

12 + 12 + 12 + 12 + 12 + 12 = 72

Therefore, Calvin climbs a total of 72 stairs from the 1st floor to the 7th floor.