Teachers, save “Montessori Addition Snake Game, Set 3” to assign it to your class.

Use the tool to drag the bead stair around your work space. Count the beads and mark with an arrow when you get to 10. Line up ten bead bars underneath each set of 10 that you count. When you have counted up all of the beads and exchanged for tens, count the ten bars to get your total. Use the :draw: tool to record the sum in the blue box. Click the when you are finished to submit the work to your teacher.