What does it mean if you CAN count backwards from 100 by 7?

If you can count backwards from 100 by 7, it means you can subtract 7 from 100 repeatedly and accurately find the subsequent numbers in the sequence. This demonstrates a grasp of basic arithmetic and an understanding of negative increments. The ability to do this also indicates familiarity with the concept of patterns in numbers. For example, the sequence would be 100, 93, 86, 79, and so on.