Select the math expression that is greater.

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GAMEPLAY: Evaluate each math expression and select the one (click, touch or arrow keys) with the greater value. Get multiple correct answers in a row to earn more points and in-game items. Score as many points as possible before time runs out.

GOALS: Earn the pro ✦, expert ✦ ✦, master ✦ ✦ ✦, legend ✦ ✦ ✦ ✦, cyborg 🤖 and alien 👽 rank badges by scoring at least 55, 70, 85, 100, 200 and ??? points, respectively. Score at least 100 points on easy, 85 points on hard and 70 points on insane to unlock a secret game mode and new challenge.

ITEMS: Select an item (click, touch or number keys) during the game to use it. The TIME item adds time to the game. The SKIP item gives you a new problem. The EVAL item simplifies the problem. You can earn up to 3 of each item.

KEYS: The keyboard can be used to play the game. The up arrow key selects the top expression. The down arrow key selects the bottom expression. The 1 key selects the TIME item. The 2 key selects the SKIP item. The 3 key selects the EVAL item.

TOPICS: Expressions may involve addition, subtraction, multiplication, division, positive numbers, negative numbers and order of operations. The "Addition and Subtraction" and "Multiplication and Division" lessons at School Yourself provide a great review of these topics.