Counting in fives and the grouping method
Lay small items (buttons, screws, pencils) on a table in rows of five and count the groups. Add the remainder to the group total and you have the answer.
That way someone else can check your work easily too.
Lay small items (buttons, screws, pencils) on a table in rows of five and count the groups. Add the remainder to the group total and you have the answer.
That way someone else can check your work easily too.