Примеры чтения математических выражений на английском языке
Arithmetic
Addition
12 + 13 = 25 Twelve plus thirteen is (masks equals) twenty-five
addend — слагаемое
sum — сумма
Subtraction
71 - 24 = 47 Seventy one minus twenty four is (equals) forty-seven
minuend — уменьшаемое
subtrahend — вычитаемое
remainder, difference — разность
Multiplication
8 × 6 = 48 Six times eight is forty-eight (eight multiplied by six is forty-eight)
multiplicant — множимое
multiplier (factor) — множитель
product — произведение
Division
90 : 9 = 10 Ninety divided by nine is ten
divident — делимое
divisor — делитель
quotient — частное
Fractions
Common fractions
1/2 a half (one second); 1/4 a quarter (one forth); 3/7 three seventh
Proper fractions
2/3 (2 — numerator, 3 — denominator)
Improper fractions
5/3 (5 — numerator, 3 — denominator)
Mixed number
5 1/3; 7 2/9 (9 - common denominator)
Decimal fractions
0.4 nought point four (0 [əu] point four)
0.06 nought point nought six (0 [əu] point 0 [əu] six)
.2 point two (period two, two tenth)
.37 point thirty seven (period thirty-seven)
652.47 six hundred fifty-two point forty seven (six five two point forty-seven)
1.007 one point 0 [əu] 0 [əu] seven
Power
raise to a power - возводить в степень
in the second power — во второй степени, в квадрате
in the third power — в третьей степени, в кубе
in the n-th power — в n-ной степени
33 3 cubed (three to the third power)
3a2 three a to the second power (3 - coefficient; a - base; 2 - exponent)
Evolution
√ square root (radical sign)
√4 = 2 the square root of four is two
3√ cubic root
Ratio
H/L ratio H per L; H to L
y = f(x) y is a function of x
dy/dx, df(x)/dx the derivative of у with respect to x
d2y/dx2 the second derivative of у with respect to x
1 one; a unit single; once
2 two; a pair; a couple; double; twice; twice the number; twice as much
3 three; triple; three times
12 a dozen
20 a score