Chapter 13: League vs. Legion
Description: The Super Friends are bailed out by the new-comers. What no one realizes is Lex Luthor has a hulking behemoth of his own.
Category: DC Super Friends
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Practice subtraction skills up to 20 in this online flashcard game. You have 2 minutes to solve as many subtraction problems as you can. Use the keyboard or touchscreen to play. Are you looking to practice other math skills? Check out the entire Two Minute Warning line of online math flashcard games on PrimaryGames.com.