one two three
seventh sevenths fifths
В смешанных числах употребляется союз «and».
3 1/3 — three and a third, 2 1/2 — two and a half.
Сочетания дробных числительных с существительными образуются следующим образом:
1/2 km half a kilometre (a half kilometre), 1 1/3 tons — one and a third tons (one ton and a third) 2 1/3 pounds (lb) two and a third pounds (two pounds and a third).
В десятичных дробях (decimal fractions) каждая цифра обозначается отдельным количественным числительным.
0.3 — nought point three (или .3 — point three) 2.25 two point two five; 16.205 one six (sixteen) point two nought five.
Ноль читается любым из трех способов: zero ['ziarou], nought [no:t], о [ou].
Addition Сложение
3 + 7=10
Three plus seven equals ten. Three plus seven is equal to ten.
a+b—c
a plus b equals с
plus [plAs] — плюс; positive sign [sain] — знак плюс;; sign of addition — знак сложения; addend [a'dend] слагаемое; item [aitam] — слагаемое; sum — сумма, суммировать; summond ['sAmand] — слагаемое; total [toutl]— целое, сумма; итог, подводить итог; unknown — неизвестное; equality — равенство; symbol — условное обозначение; sign [sain] знак, ставить знак.
Subtraction Вычитание
11—3 = 8
Eleven minus three equals eight. Three from eleven leaves eight.
a—b = c
a minus b is equal to с
minus ['mainss] минус, без, отрицательный знак; negative sign — минус, отрицательный знак; minuend ['minjuand] — уменьшаемое; subtrahend ['sAbtrshand]; difference ['difrons] — разность; between — между.
Multiplication Умножение
2X2=4
Twice two is four; 3X3=9
Three times three is nine. 5x5=25
Five times five is twenty-five.
Читается times при умножении небольших целых чисел. В остальных случаях —multiplied by (или by). 12X12=144
Twelve (multiplied) by twelve equals one hundred ;and forty four.
a-b—c
a multiplied by b equals с
X—multiplication sign — знак умножения; multiply f'nultiplai] — множить, умножать; multiplicand [,тл1-'tipli'kaend] — множимое; multiplier [дплШ'рЫэ] — множитель; factor ['faekta] — множитель, коэффициент, фактор; product ['prodakt] — произведение.
Division Деление
■25:5=5
Twenty five divided by five equals five
a: b — c
a divided by b is equal to с
a+b c+d
a—bс—d
a plus b over a minus b is equal to сplus d over сminus d
Involution
Возведениевстепень
32 Three squared (three square). Three (raised) to the second power.
53 Five cubed (five cube). Five (raised) to the third f)ower.
8=23 Eight is the third power of two.
105 — Then to the fifth power.
10-7 — Ten to the minus seventh power.
n~10 — я to the minus tenth power; n to the minus tenth.
power — степень; raise to a power — возвышать в степень; exponent [eks'pounant] — показатель.
Evolution Извлечениекорня
У4=2 The square root (out) of four is (equals) two.
у27=3 The cube root of twenty seven is three.
■j/16=2 The fourth root of sixteen is two.
Уa The square root of a
yfa2 The fifth root of a square
extract [iks'traekt] извлекать; extract the root of (out of) —извлекать корень из ..; radical sign — знак корня..
Ratio Отношение
1 :2
The ratio of one to two;
4:2=2
The ratio of four to two is two.
on с ie a 20 16
20: 5= 16: 4 или - =------
5 4
The ratio of twenty to five equals (is equal to) the ratio of sixteen to four (twenty is to five as sixteen is to four).
a : b = c
The ratio of a to b is с
: ratio sign — знак отношения, читается как to или is to.
Proportion Пропорция
2:3=4:6
Two is to three as four is to six. The ratio of two to three equals the ratio of four to six. a : b=c : d a is to b as сis to d x/y x varies directly as y\ x is directly proportional to y.
Equation Уравнение
{a+b){a—b)=a2—b2
The product of the sum and difference of two quantities is equal to the difference of their squares.
identity [ai'dentiti] тождество; value ['vaelju] величи-ма, значение.
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