This set of subitizing and addition online activities focuses on the following foundational skills:

• Subitizing Numbers on a Five Frame
• Subitizing Numbers on a Ten Frame
• Adding With Objects, Pictures and Equations (Addition)

Some games require flash permissions.

Games linked from this page practice Common Core Standards: K.OA.1, K.OA.2, K.OA.5

Want more addition and subitizing online activities that are differentiated? Click to see Math Centers for more options.