More Dicey Operations Ayah

The numbers that were given to me were 3, 6, and 1. First, I eliminated 1 as the multiplier, since anything times 1 is itself, and 63 or 36 wasn't close to 100. Then I tried 16 x 3, but that gave me 48, a number too small. I then did 61 x 3 to get a high number taht will potentially be closer to 100, but i got 183, which is far too much. So then I tried making 6 the multiplier and did 13 x 6, which gave me 78, so I tried that, since it only had a difference of 22.