How to say mathematical expression in Japanese

Posted last year

Here is a list of common mathematics notation in English and Japanese

Form	English	Japanese
$A+B=C$	A plus B equals C	A 足す B は C
$A-B=C$	A minus B equals C	A 引く B は C
$A \times B=C$	A times B equals C	A 掛ける B は C
$A \div B=C$	A divides B equals C	A 割る B は C
$A^B=C$	A to the power B equals C A raised to the Bth power equals C	A の B 乗は C
$X^2$	X squared	X の二乗 X の自乗
$X^3$	X cubed	X の立方
$\frac{1}{2}$	one-half	2 分の 1
$\frac{2}{3}$	two-third	3 分の２
$\frac{14X}{5Y}$	14X over 5Y	5Y 分の 14X
$\sqrt{A}$	square root of A	A の平方根 A の自乗根 A の二乗根
$\sqrt[3]{A}$	third square root of A	A の三乗根 A の立方根
$X!$	factorial of X	X の階乗
$\\|X\\|$	absolute value of X	X の絶対値
$\ln X$	LN (or linn) X	X の自然対数
$log_bX$	log of X, base b	ログ b の X
$\int (x^2-4x+9)dx$	integral of x squared minus 4x plus 9	x 二乗引く 4x 足す 9 の積分
$()$	parentheses	丸括弧
$[]$	brackets	隅括弧

Variables (A,B,C,X,Y) are read as is (but in Japanese accent). A is エー (e-), B is ビー (bi-), C is シー (shi-), X is エックス (ekkusu), Y is ワイ (wai), etc

Most of the times using katakana version of English noun/verb is ok, for example:

It is common to hear プラス　 $+$ and マイナス　 $-$
Integrals ( $\int$ ) could be インテグラル (Integuraru) instead of the native Japanese (積分)
In programming and mathematics, equals ( $=$ ) could be イコール

Happy learning!