［第2回］ 四則演算・累乗・累乗根などの読み方
数字・数式の英語の読み方 – 演算(operation)/数式(expression/formula)
注： 同義語は/の後に、言い替え用語は[ ]内に記載。アクセント部分を下線で強調。
| No | 式･表記 | 日本語 | 英語 | 読み方 |
|---|---|---|---|---|
| 1 | 算数 | arithmetic | <- | |
| 2 | 演算 | operation | <- | |
| 3 | 数学 | mathematics | <- | |
| 4 | 代数 | algebra | <- | |
| 5 | 三角法 | trigonometry | <- | |
| 6 | 幾何学 | geometry | <- | |
| 7 | 四則, 加減乗除算 | four operations / four arithmetic operations |
<- | |
| 8 | (+) | 加算, 加法 | addition | <- |
| 9 | (-) | 減算, 減法 | subtraction | <- |
| 10 | (×), (∙), (*) | 乗算, 乗法 | multiplication | <- |
| 11 | (÷), (/) | 除算, 除法 | division | <- |
| 12 | = | 等式/等しい | equality | <- |
| 13 | ≠ | 不等式/ 不一致 |
inequality | <- |
| 14 | < | 不等式/ 小なり |
strict inequality | <- |
| 15 | > | 不等式/ 大なり |
strict inequality | <- |
| 16 | [a = b] | 等しい | equal | a is equal to b / a equals b |
| 17 | [a ≠ b] | 等しくない | is not equal | a is not equal to b |
| 18 | [a < b] | より小さい | less than | a is less than b |
| 19 | [a ≤ b] | less than or equal to | a is less than or equal to b | |
| 20 | [a > b] | より大きい | greater | a is greater than b |
| 21 | [a ≥ b] | greater than or equal to | a is greater than or equal to b | |
| 22 | [a ± b] | 加法と減法 | plus or minus | a plus or minus b |
| 23 | [a + b] = c | 足す | plus | a plus b equals c |
| 24 | [a - b] = c | 引く | minus | a minus b equals c |
| 25 | [a×b] = c [a ∙ b] = c |
掛ける | times / multiplied by |
a times b equals c / a multiplied by b equals c |
| 26 | [a ÷ b] = c [a/b] = c |
割る | divided by / over |
a divided by b equals c / a over b equals c |
| 27 | [a:b] | 比率 | ratio | the ratio of a to b |
| 28 | n! | 階乗 | factorial | n factorial / factorial of n |
| 29 | a^b ab |
累乗, (aの)b乗 | (raised) to the power of | the bth power of a / a raised to the bth power / a (raised) to the b |
| 30 | a2 | (aの)二乗 | square | the square of a / a squared |
| 31 | a3 | (aの)三乗 | cube | the cube of a/ a cubed |
| 32 | a5 | (aの)5乗 | fifth power | the fifth power of a / a raised to the fifth power / a to the power of 5 / a to the fifth / a to the five |
| 33 | a-n | (aの)マイナスn乗 | minus nth power | a to (the) minus nth power / a to (the) minus(/negative) n |
| 34 | a1⁄2 | (aの)二分の一乗 | half power | a to (the) half power / the square root of a |
| 35 | a1⁄3 | (aの)三分の一乗 | cube root | the cube root of a |
| 36 | a1⁄5 | (aの)五分の一乗 | fifth root | the fifth root of a |
| 37 | a-1⁄n | (aの)マイナスn分の一乗 | minus nth root | the minus nth root of a |
| 38 | √a | (aの)平方根 | square root | the square root of a |
| 39 | √(a+b) | (a+bの)平方根 | square root | the square root of the sum of a plus b |
| 40 | 3√a | (aの)立方根 | cube root | the cube root of a |
| 41 | n√a | 累乗根, 冪根, ルート, (aの)n乗根 | nth root | the nth root of a |