mental arithmetic | เลขในใจ [คณิตศาสตร์๑๙ ก.ค. ๒๕๔๗] |
默算 | [默 算] mental arithmetic; to calculate inwardly #158,382 [Add to Longdo] |
Grundrechenarten { pl } | fundamental arithmetic operations [Add to Longdo] |
Kopfrechnen { n } | mental arithmetic [Add to Longdo] |
暗算 | [あんざん, anzan] (n, vs) mental arithmetic [Add to Longdo] |
目の子勘定 | [めのこかんじょう, menokokanjou] (n) rough estimate; mental arithmetic [Add to Longdo] |
目の子算 | [めのこざん, menokozan] (n) rough estimate; mental arithmetic [Add to Longdo] |