Addition is a regrouping: two sets of objects which were counted separately are put into a single group and counted together: the count of the new group is the "sum" of the separate counts of the two original groups.
The count of the new group is the "sum" of the separate counts of the two original groups. Addition is a regrouping: two sets of objects counted separately are put into a single group and counted together.
Addition is a regrouping: two sets of objects counted separately are put into a single group and counted together. The count of the new group is the "sum" of the separate counts of the two original groups.
Addition is a regrouping: two sets of objects counted separately are put into a single group and counted together. The count of the new group is the "sum" of the separate counts of the two original groups.