Space Race | Addition and Missing Addends to 5 Game

Space Race—The Missing Addends to 15 Space Race game is a stress-free and enjoyable way for kids to learn their addition and dabble in algebraic thinking! To play the game, children can click on the asteroid with the correct answer, and the astronaut breaks through and speeds ahead toward the finish line!

Common Core Standards

CCSS.MATH.CONTENT.1.OA.B.4: Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.

CCSS.MATH.CONTENT.1.OA.C.5: Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

CCSS.MATH.CONTENT.1.OA.D.8: Determine the unknown whole number in an addition or subtraction equation relating three whole numbers (e.g.,
5 + _ = 9 ).

CCSS.MATH.CONTENT.2.OA.B.2: Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.