The capacity to process numbers and perform simple calculations in activities of daily living might be disturbed after a stroke [1]; these include difficulties in reading time, making use of money currency or paying bills, estimating quantity or entering a door code. Analytical tests have been developed to diagnose acalculia and to assess numerical skills in patients (batterie d'e´valuation du traitement des nombres et du calcul chez l'adulte, Test Lillois de Calcul 2, e´valuation clinique des aptitudes nume´riques [ECAN]), but ecological tests assessing these specific disorders are lacking. In 2015, we standardized and published the Ecological Assessment Battery of Numbers (EABN) [2] that assesses impairments to perform calculations and to deal with numbers through (semi-)naturalistic daily life scenarios. In the present study, patients with a history of left stroke were included to: (1) assess their functional impairment regarding calculation and number processing as assessed by the EABN and; (2) analyze correlations of the EABN score with formal scores of calculation, language, cognitive disorders, global disability and quality of life.