It’s been awhile since I’ve posted a Japanese vocabulary list, so I thought I would make one about mathematics and numbers (数学用語). I’ve purposefully left shapes out of this list and may make another list later just focusing on those.
(Interesting fact: In the 2015 PISA average scores, Japan scored #5 in math and #2 in science.)
If you have any ideas for a vocabulary list, let me know.
- 数学 (suugaku): mathematics
- 数学的 (suugakuteki): mathematical (used as an adjective)
- 数字 (suuji): number
- 数 (kazu): number
- 桁 (keta): digit
- ３桁 (san keta): 3 digits
- 算数 (sansuu): elementary mathematics [covers things like basic counting, shapes, addition, etc.]
- 足し算 (tashizan): addition
- １＋２＝３ (ichi tasu ni wa san)
- 引き算 (hikizan): subtraction
- ３−２＝１ (san hiku ni wa ichi)
- 掛け算 (kakezan): multiplication
- ２ｘ３＝６ (ni kakeru san wa roku)
- 割り算 (warizan): division
- ８/４＝２ (hachi waru yon wa ni)
- 小数 (shousuu): decimal
- 3.2 (san ten ni)
- 分数 (bunsuu): fraction
- 5/3（san bun no go)
- 分母 (bunbo): divisor (3 in this example)
- 分子 (bunshi): numerator (5 in this example) [Note: also means molecule in physics]
- 約数 (yakusuu): divisor
- １０の約数 (juu no yakusuu): divisor of 10
- 倍数 (baisuu): multiple
- ５の倍数 (baisuu): multiple of 5
- 指数 (shisuu): exponent [also index, as in ‘customer index’]
- 偶数 (guusuu): even number
- 奇数 (kisuu): odd number
- 非数 (hisuu): not a number (NAN)
- 無理数 (murisuu): irrational number
- 有理数 (yuurisuu): rational number
- 比 (hi): ratio
- ２対３ (ni tai san): 2:3 (radio of 2 to 3)
- 量 (ryou): amount
- 体積 (taiseki): volume
- 面積 (menseki): area
- 角度 (kakudo): angle
- ９０度 (kyuu juu do): 90 degrees
- 長さ (nagasa): length
- 重さ (omosa): weight
- 速さ (hayasa): speed
- 素数 (sosuu): prime number
- 整数 (seisuu): integer / whole number
- 実数 (jissuu): real number
- 虚数 (kyosuu): imaginary number
- 自然数 (shizensuu): natural number [1,2,3,4,5…]
- 負の数 (fu no suu): negative number [also 負数]
- 正の数 (sei no suu): positive number [also 正数]
- 多い (ooi): many / more than [10より多い = more than 10]
- 少ない (sukunai): few / less than [5より少ない = less than 5]
- 等しい (hitoshii): equal [also イコール]
- 円周率 (enshuuritsu): PI (3.141592…)
Here is a site in Japanese with a few more: http://www.suriken.com/knowledge/glossary/grade01_06.html
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小数 (shousuu): decimal
3.2 (ichi ten ni)
kaite arukedo daijyoubu?
goshiteki arigatou gozaimasu. naoshimashita.
How do you read something like 5 ^ 3 = 125 in Japanese?
Exponentiation is expressed in Japanese with 乗 (jou)
5 ^ 3 = 125
ご の さんじょう イコール ひゃくにじゅうご
Exact Pi Theory BY: Michael G. Strain Jr.
The Exact Pi Theory states that Pi can be figured out by using the volume of a sphere equation V=(4/3) Pi r^3 (source 1), and by taking the physical measurements of volume and diameter with particular methods we find pi. Then divide the diameter by 2 to find radius. Volume of a sphere can be measured by placing the sphere into a square (possibly airtight) container of water or liquid and measuring the displacement thus getting a square measurement of volume without using pi. Diameter can be measured by placing the sphere into a fitted square box or wrench with a measuring gauge thus measuring diameter. Pi would be the last variable left thus giving us an accurate value of Pi. Through the new measurement of Pi a new measurement of circumference can be made.
Sorry, how does your comment relate to Japanese vocabulary words?