Common Core: 4th Grade Math › Understand Place Values: CCSS.Math.Content.4.NBT.A.1
tens equal how many ones?
tens equal how many ones?
tens equal how many ones?
tens equals how many ones?
tens equal how many ones?
ten equal how many ones?
tens equal how many ones?
tens equal how many ones?
tens equal how many ones?
tens equal how many ones?