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mong veterans above and beyond PTSD and depressive symptoms. (PsycInfo Database Record (c) 2020 APA, all rights reserved).Place value, which underlies the meanings of multidigits, encompasses the principle of position and base-10 rules. To understand 65, one needs to know that the digits 6 and 5 occupy different positions and thus represent ordered values of different magnitudes (i.e., the principle of position) and that the value of each position is determined by base-10 rules (i.e., the rightmost position is 100, followed by 101, 1