This is a set of 7 board games to help your students mentally add and subtract 10 and 100 to/from a given number.
The 7 games in cluded are:
~Mentally add 10
~Mentally subtract 10
~Mentally add 100
~Mentally subtract 100
~Mentally add 10 & 100
~Mentally subtract 10 & 100
~Mentally add & subtract 10 & 100
Each game has the same directions, but the problems on the boards are different, depending on what you want your students to be practicing.
I love to use these both as small guided groups and small independent groups. My students love them and the repeated practice has proved to work very well.