Addition of 3-Digit Numbers w/ Bridging

2.NBT.7
Module 10  Lesson 7
Differentiation Activity

Students draw two cards and add them together mentally.  If they need models, they can use base-ten blocks or the empty number lines attached.  Students compare their numbers, and the student with the greatest number wins a point.  The student who has the most points after 10 rounds is the winner.

Number Cards
Number Lines (optional)