The procedure used by Carl Friedrich Gauss to find the sum of the first 100 counting numbers can be modified to find the sum of the numbers from 1 to 320. To do this, we need to find the number of pairs of numbers that add up to a constant value. In the case of the first 100 counting numbers, Gauss observed that there were 50 pairs of numbers that each added up to 101. To find the sum of the numbers from 1 to 320, we can use a similar approach. We need to find the constant value to which we can pair up the numbers. First, we find the sum of the first and last numbers: 1 + 320 = 321. Then, we find the sum of the second and second-to-last numbers: 2 + 319 = 321. We continue this process until we reach the middle number. Since there are an even number of terms (320 in this case), we can pair up 160 pairs of numbers. Each pair adds up to 321. Now, we can find the sum by multiplying the constant value by the number of pairs: 321 * 160 = 51,360. Therefore, the sum of the numbers from 1 to 320 is 51,360.