This activity goes along with the standard 2.NBT.b.8 and would be a perfect game to use during math centers to allow students to work together and have fun while learning! I color coded each card set. Blue = 3 digit +10 and +100Red = 3 digit -10 and
Students will show and explain their mental strategy while solving 3-digit addition and subtraction problems.
I have used this for my Math writing center. It allows students to practice explaining their strategies they use to solve