算數 [ㄙㄨㄢˋ ㄕㄨˋ; suan4 shu4]
  to count numbers
  to keep to one's word
  to hold (i.e. to remain valid)
  to count (i.e. to be important)
  ◄ ►
  算数
  さんすう
  noun (common) (futsuumeishi)
  nouns which may take the genitive case particle `no'
  arithmetic
  ◄ ►