Examples 

x + 1 x plus one
x -1 x minus one
x ± 1 x plus or minus one
xy x y;  x times y; x multiplied by y
(x — y)(x + y)  x minus y, x plus y
x/y x over y;  x divided by y;
x ÷ y x divided by y
x = 5 x equals 5;  x is equal to 5
x ≈ y x is approximately equal to y
x ≡ y x is equivalent to y;  x is identical with y
x ≠ y x is not equal to y
x > y  x is greater than y
x < y  x is less than y
x ≥ y x is greater than or equal to y
x ≤ y x is less than or equal to y
0 < x < 1 zero is less than x is less than 1; x is greater than zero and less than 1
0 ≤ x ≤ 1 zero is less than or equal to x is less than or equal to 1; x is greater than or equal to zero and less than or equal to 1
x² x squared
x³ x cubed
x4 x to the fourth;  x to the power four
xn x to the n; x to the nth;  x to the power n
x-n x to the minus n;  x to the power of minus n
√ root x; square root x; the square root of x
? the cube root of x
? the fourth root of x
  the nth root of x
(x + y)² x plus y all squared
(x/y)² x over y all squared
n! n factorial; factorial n
x% x percent
∞ infinity
x ∝ y x varies as y; x is (directly) proportional to y
x ∝ 1/y x varies as one over y; x is indirectly proportional to y
? x dot
? x double dot
f(x) fx f of x; the function of x
f‘(x) f dash x; the (first) derivative of with respect to x
f‘‘x f double-dash x; the second derivative of f with respect to x
f‘‘‘(x) f triple-dash x; f treble-dash x; the third derivative of f with respect to x
f(4) f four x; the fourth derivative of f with respect to x
∂v the partial derivative of v
∂v∂θ delta v by delta theta, the partial derivative of v with respect to θ
∂²v∂θ² delta two v by delta theta squared; the second partial derivative of v with respect to θ
dv the derivative of v
dvdθ d v by d theta, the derivative of v with respect to theta
d²vdθ² d 2 v by d theta squared, the second derivative of v with respect to theta, 
∫ integral
  integral from zero to infinity
∑ sum
  the sum from i equals 1 to n
w.r.t. with respect to
logey log to the base e of y; log y to the base e; natural log (of) y
∴ therefore
∵ because
→ gives, approaches
Δx → 0 delta x approaches zero
limΔx→0 the limit as delta x approaches zero, the limit as delta x tends to zero
LtΔx→0 the limit as delta x approaches zero, the limit as delta x tends to zero
m/sec metres per second
x ∈ A x belongs to A; x is a member of A; x is an element of A
x∉ A x does not belong to A; x is not  a member of A; x is not an element of A
A⊂ B A is contained in B; A is a proper subset of B
A ⊆ B A is contained in B; A is a subset of B
A ? B A intersection B
A ? B A union B
cos x cos x; cosine x
sin x sine x
tan x tangent x, tan x
cosec x cosec x
sinh x shine x
cosh x cosh x
tanh x than x
|x| mod x; modulus x
18 ℃ eighteen degrees Centigrade
70 ℉ seventy degrees Fahrenheit



Greek alphabet 

Α α alpha /‘ælf?/
Β β beta /‘bi:t?/
Γ γ gamma /‘gæm?/
Δ δ delta /‘delt?/
Ε ε epsilon /‘epsil?n/
Ζ ζ zeta /‘zi?t?/
Η η eta /‘i?t?/
Θ θ theta /‘θi?t?/
Ι ι iota /a?‘??t?/
Κ κ kappa /‘kæp?/
Λ λ lamda /‘læmd?/
Μ μ mu /‘mju?/
Ν ν nu /‘nju?/
Ξ ξ xi /‘ksa?/
Ο ο omicron /‘??m?kr?n/
Π π pi /‘pa?/
Ρ ρς rho /‘r??/
Σ σ sigma /‘s?gm?/
Τ τ tau /‘tɑ?/
Υ υ upsilon /‘j?ps?l?n/
Φ φ phi /‘fa?/
Χ χ chi /‘ka?/
Ψ ψ psi /‘psa?/
Ω ω omega /‘??m?g?/

^ 
Roman alphabet 

A a /‘e?/
B b /‘bi?/
C c /‘si?/
D d /‘di?/
E e /‘i?/
F f /‘ef/
G g /‘?i?/
H h /‘e??/
I i /‘a?/
J j /‘?e?/
K k /‘ke?/
L l /‘el/
M m /‘em/
N n /‘en/
O o /‘??/
P p /‘pi?/
Q q /‘kju?/
R r /‘ɑ?/
S s /‘es/
T t /‘ti:/
U u /‘ju:/
V v /‘vi:/
W w /‘d?blju?/
X x /‘eks/
Y y /‘wa?/
Z z /‘zed/

^ 
Fractions 

½ a half /? ‘hɑ:f/
¼ a quarter /? ‘kw??t?/
¾ three quarters /θri? ‘kw??t?z/
? a third /? ‘θ?:d/
? two thirds /tu: ‘θ?:dz/
? a fifth /? ‘f?fθ/
? two fifths /tu: ‘f?fθs/
? three fifths /θri? ‘f?fθs/
? four fifths /f?? ‘f?fθs/
? a sixth /? ‘s?ksθ/
? five sixths /fa?v ‘s?ksθs/
? an eighth /?n ‘e?tθ/
? three eighths /θri? ‘e?tθs/
? five eighths /fa?v ‘e?tθs/
? seven eighths /sev?n ‘e?tθs/

^ 
Decimal Fractions 

0.1 nought point one /n?:t p??nt w?n/
0.01 nought point oh one /n?:t p??nt ?? w?n/
0.0001 nought point oh oh oh one /ten p??nt ?? ?? ?? w?n/
1.1 one point one /w?n p??nt w?n/
1.2 one point two /w?n p??nt tu:/
1.23 one point two three /w?n p??nt tu: θri:/
1.0123 one point oh one two three /w?n p??nt ?? w?n tu: θri:/
10.01 ten point oh one /ten p??nt ?? w?n/
21.57 twenty-one point five seven /‘twent? w?n p??nt  fa?v ‘sev?n/
2.6666666666.... two point six recurring /tu: p??nt  s?ks r?‘k?:r??/
2.612361236123... two point six one two three recurring /tu: p??nt  s?ks w?n tu: θri: r?‘k?:r??/
2.5 million two point five million /tu: p??nt  fa?v ‘m?lj?n/

^ 
SI Units: Prefixes 

10-24 yocto y /‘j?kt??/
10-21 zepto z /‘zept??/
10-18 atto a /‘at??/
10-15 femto f /‘femt??/
10-12 pico p /‘pi:k??/
10-9 nano n /‘nan??/
10-6 micro µ /‘ma?kr??/
10-3 milli m /‘m?l?/
10-2 centi c /‘sent?/
10-1 deci d /‘des?/
103 kilo k /‘k?l??/
106 mega M /‘meg?/
109 giga G /‘g?g?/
1012 tera T /‘ter?/
1015 peta P /‘pet?/
1018 exa E /‘eks?/
1021 zetta Z /‘zet?/
1024 yotta Y /‘j?t?/
1027 xona X /‘z??n?/
1030 weka W /‘wek?/
1033 vunda V /‘v?nd?/

^ 
Cardinal Numbers 

1 one /w?n/
2 two /tu:/
3 three /θri:/
4 four /f??/
5 five /fa?v/
6 six /s?ks/
7 seven /‘sev?n/
8 eight /e?t/
9 nine /na?n/
10 ten /ten/
11 eleven /?‘lev?n/
12 twelve /twelv/
13 thirteen /θ?:‘ti:n/
14 fourteen /f??‘ti:n/
15 fifteen /f?f‘ti:n/
16 sixteen /s?kst‘i:n/
17 seventeen /seven‘ti:n/
18 eighteen /e?‘ti:n/
19 nineteen /na?n‘ti:n/
20 twenty /‘twent?/
21 twenty-one /twent?‘w?n/
22 twenty-two /twent?‘tu:/
23 twenty-three /twent?‘θri:/
24 twenty-four /twent?‘f??/
25 twenty-five /twent?‘fa?v/
26 twenty-six /twent?‘s?ks/
27 twenty-seven /twent?‘sev?n/
28 twenty-eight /twent?‘e?t/
29 twenty-nine /twent?‘na?n/
30 thirty /‘θ?:t?/
40 forty /‘f??t?/
50 fifty /‘f?ft?/
60 sixty /‘s?kst?/
70 seventy /‘sev?nt?/
80 eighty /‘e?t?/
90 ninety /‘na?nt?/
100 a hundred; one hundred /? ‘h?ndr?d/ /w?n ‘h?ndr?d/
101 a hundred and one /? ‘h?ndr?d ?n w?n/
102 a hundred and two /? ‘h?ndr?d ?n tu:/
110 a hundred and ten /? ‘h?ndr?d ?n ten/
120 a hundred and twenty /? ‘h?ndr?d ?n ‘twent?/
200 two hundred /tu: ‘h?ndr?d/
300 three hundred /θri:  ‘h?ndr?d/
400 four hundred /f?? ‘h?ndr?d/
500 five hundred /fa?v ‘h?ndr?d/
600 six hundred /s?ks ‘h?ndr?d/
700 seven hundred /‘sev?n ‘h?ndr?d/
800 eight hundred /e?t ‘h?ndr?d/
900 nine hundred /na?n ‘h?ndr?d/
1 000 a thousand, one thousand /? θ‘ɑ?z?nd/ /w?n ‘θɑ?z?nd/
1 001 a thousand and one /? ‘θɑ?z?nd ?n w?n/
1 010 a thousand and ten /? ‘θɑ?z?nd ?n ten/
1 020 a thousand and twenty /? ‘θɑ?z?nd ?n ‘twent?/
1 100 one thousand, one hunded /w?n ‘θɑ?z?nd w?n ‘h?ndr?d/
1 101 one thousand, one hundred and one /w?n ‘θɑ?z?nd w?n ‘h?ndr?d ?n w?n/
1 110 one thousand, one hundred and ten /w?n ‘θɑ?z?nd w?n ‘h?ndr?d ?n ten/
9 999 nine thousand, nine hundred and ninety-nine /na?n ‘θɑ?z?nd na?n ‘h?ndr?d ?n ‘na?nt? ‘na?n/
10 000 ten thousand /ten ‘θɑ?z?nd/
15 356 fifteen thousand, three hundred and fifty six /‘f?fti:n ‘θɑ?z?nd θri: ‘h?ndr?d ?n ‘f?ft? s?ks/
100 000 a hundred thousand /? ‘h?ndr?d ‘θɑ?z?nd/
1 000 000 a million /? ‘m?lj?n/
100 000 000 a hundred million /? ‘h?ndr?d ‘m?lj?n/
1 000 000 000 a billion /? ‘b?lj?n/
100 000 000 000 a hundred billion /? ‘h?ndr?d ‘b?lj?n/
1 000 000 000 000 a trillion /? ‘tr?lj?n/
1 000 000 000 000 000 a quadrillion /? kw?dr?lj?n/
1 000 000 000 000 000 000 a quintillian /? kw?n‘t?lj?n/
1 000 000 000 000 000 000 000 a sextillion /? seks‘t?lj?n/
1 000 000 000 000 000 000 000 000 a septillion /? sep‘t?lj?n/
1 000 000 000 000 000 000 000 000 000 an ocillion /?n ?kt‘t?lj?n/
1 000 000 000 000 000 000 000 000 000 000 a nonillion /? n?n‘?lj?n/
1 000 000 000 000 000 000 000 000 000 000 000 a decillion /? de‘s?lj?n/

^ 
Ordinal Numbers 

1st first /f?:st/
2nd second /‘sek?nd/
3rd third /θ?:d/
4th fourth /f?:θ/
5th fifth /f?fθ/
6th sixth /s?ksθ/
7th seventh /‘sev?nθ/
8th eighth /e?tθ/
9th ninth /na?nθ/
10th tenth /tenθ/
11th eleventh /?‘lev?nθ/
12th twelfth /‘twelfθ/
13th thirteenth /θ?:‘ti:nθ/
14th fourtheenth /f??‘ti:nθ/
15th fidteenth /f?f‘ti:nθ/   
16th sixteenth /s?ks‘ti:nθ/
17th seventeenth /seven‘ti:nθ/
18th eighteenth /e?‘ti:nθ/
19th nineteenth /na?n‘ti:nθ/
20th twentieth /‘twent??θ/
21st twenty-first /twent?‘f?:st/
22nd twenty-second /twent?‘sek?nd/
23rd twenty-third /twent?‘θ?:d/
24th twenty-fourth /twent?‘f?:θ/
25th twenty-fifth /twent?‘f?fθ/
26th twenty-sixth /twent?‘s?ksθ/
27th twenty-seventh /twent?‘sev?nθ/
28th twenty-eighth /twent?‘e?tθ/
29th twenty-ninth /twent?‘na?nθ/
30th thirtieth /‘θ??t??θ/
31st thirty-first /θ??t?‘f?:st/
40th fortieth /‘f?:t??θ/
50th fiftieth /‘f?ft??θ/
100th hundredth /‘h?ndr?dθ/
1 000th thousandth /‘θɑ?z?ndθ/
1 000 000th millionth /‘m?lj?nθ/