arithmetic     
  I.a‧rith‧me‧tic1 /əˈrɪθmətɪk/ BrE  AmE  noun [uncountable]   [Date: 1200-1300; Language: Old French; Origin: arismetique, from Latin, from Greek, from arithmein 'to count', from arithmos 'number']    the science of numbers involving adding, multiplying etc ⇨ mathematics II.ar‧ith‧met‧ic2 /ˌærɪθˈmetɪk◂/ BrE  AmE  (also ar‧ith‧met‧i‧cal /-tɪkəl/) adjective technical    involving or related to arithmetic:         the arithmetic mean  (=average)   —arithmetically /-kli/ adverb
  a\\arithmetichu| ◎ | [ə'riθmətik] |  | ※ | danh từ |  |   | ■ | số học |  |   | ■ | sự tính |  |   | ■ | sách số học |  | ※ | tính từ |  | ◎ | [,æriθ'metik] |  |   | ■ | như arithmetical |  | ◎ | [,æriθ'metikəl] |  
 
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