Final answer:
The Working Memory Scale of the Wechsler Intelligence Scale for Children (WISC-V) consists of the Digit Span and Letter-Number Sequencing subtests, with Coding as the supplemental subtest.
Step-by-step explanation:
The core subtests that make up the Working Memory Scale in the Wechsler Intelligence Scale for Children (WISC-V) are Digit Span and Letter-Number Sequencing. The supplemental subtest for this scale is Coding. These subtests are part of a more extensive test battery designed to assess various cognitive abilities, including memory, orientation, language, and abstract reasoning. The Working Memory Scale specifically evaluates the capacity to hold and manipulate information in one's mind, reflecting functions that are typically associated with the prefrontal cortex.