Check the final digit shortcut
Whole supplied source
Fictional quantity card set: Check the final digit shortcut. First card states 405 labels; second card states 450 labels; third card states 504 labels. These are stated counts of the same kind of label, not observed stocks, money, distances or prices. A helper claims 405 is larger than 450 because 5 is larger than 0. The task is to represent, compare or order these stated quantities and give a checking reason.
Your useful job
Make a useful quantity guide. Keep the whole quantity and the value of each digit clear.
Own representations, checking explanation and any actual stock remain open.