• Welcome, Rational Number Wranglers!


    Problem 10:


    Tanner baked cookies for the neighborhood bake sale.  He put together 15 plates of chocolate chip cookies with 18 cookies on each plate and 13 plates of oatmeal raisin cookies with 12 cookies on each plate.  How many cookies did he bake?
  • cookies

  • Parent Tip:

    An open array could be helpful here.  Here is an open array for 15 x 18:

    array