# Примеры чтения математических выражений на английском языке

## Arithmetic

12 + 13 = 25 Twelve plus thirteen is (masks equals) twenty-five

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

√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