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# Add and Subtract Game for First Grade

Monroe's Moon Math – Add and Subtract, 1.NBT.5

Monroe the Martian is stuck on the Moon and needs to get back home to Mars! How? With the help of your first graders, of course! As students solve each addition and subtraction equation correctly, Monroe will get a Moon rock to help him travel. Each equation involves adding or subtracting 10 from larger, two-digit numbers. Then, students will fill in the correct answer using numbers 0 through 9.

This free and space-themed eSpark Learning activity helps first graders practice adding and subtracting two-digit numbers without having to count. As a result, you’ll feel confident that your classroom is successfully fulfilling this standard within the Number and Operations in Base Ten domain! Sign up for free and get access to more mathematical activities for First Grade!