五分五分

ごぶごぶ

as likely as not, 50-50, even match, tie

分裂

ぶんれつ

split, division, break up

五分

ごふん ごぶん ごぶ

half, 50%, tie, evenness

四分

しぶん よんふん

divide into four pieces, one fourth

核分裂

かくぶんれつ

nuclear fission

分裂性

ぶんれつせい

fissionable

分裂症

ぶんれつしょう

schizophrenia

分裂病

ぶんれつびょう

schizophrenia

四捨五入

ししゃごにゅう

rounding half up (i.e. fractions)

五四運動

May Fourth Movement (anti-imperialist student demonstration in Beijing on May 4, 1919)

四の五の

(complaining about) this and that; one thing or another

四肢五体

ししごたい

the (one's) whole body

四書五経

ししょごきょう

the Four Books and Five Classics of Confucianism, the Nine Chinese Classics

四当五落

よんとうごらく

sleep four hours and pass, sleep five hours and fail (when cramming for university entrance exams)

四分六

しぶろく

six to four ratio, sixty-forty

四半分

しはんぶん

a fourth, quarter

四分円

しぶんえん よんふんえん

quadrant

四等分

よんとーぶん

quadrisection

四分儀

しぶんぎ

quadrant (instrument)