Fact Families Addition Practice File Folder GamesCommon Core Standard: 1.NBT.C4Included in this product: Adding Zero Cover, 4 pages of practice problemsAdding One Cover, 4 pages of practice problemsAdding Two Cover, 4 pages of practice problemsAdding Three Cover, 4 pages of practice problemsAdding Four Cover, 4 pages of practice problemsAdding Five Cover, 4 pages of practice problemsAdding Six Cover, 4 pages of practice problemsAdding Seven Cover, 4 pages of practice problemsAdding Eight Cover,