The numbers that are to be added together.
Addenda's
The plural form of addendum is addenda
Enc: abbreviation for enclosure; addenda for business letter
Addenda.
Addenda
addenda
The plural form for the noun addendum is addenda or addendums (both are accepted).
The plural form is addenda.
A expression in maths is a collection of terms without an equality sign.
Its maths
"tenth"
division