アル中カラカラ 阪神算の英語

a method of calculation called 'tsurukame-zan'

the four basic functions of arithmetic, consisting of addition, subtraction, multiplication and division

mental arithmetic

mental calculations

to count the chickens before they are hatched

Are you counting your chickens before they are hatched?

He has a genius for mathematics―a head for calculation.

to “count the chickens before they are hatched” 【イディオム・格言的には：】“sell the calf in the cow's belly”

an academic subject called arithmetic

a mathematical problem named 'uekizan'

a method of calculation, called multiplication

an arithmetic operation that is the inverse of multiplication

arithmetical progression―arithmetical series

an arithmetician

Count one's chickens before they are hatched.