被加數 [－－数]

Jyutping bei6 gaa1 sou3
Pinyin bèi jiā shù

Definitions (CC-CEDICT)
  1. augend; addend
Definitions (CC-CANTO)
  1. Summand
Definitions (Wiktionary)
  1. noun
    augend (a quantity to which another is added)