ENGLISH VENTURED 2nd E.S.O.

Sums
Symbols	Word (common term in brackets)
+	Plus (And)	+
-	Minus (Take away)	-
x	Multiplied by (Times)	x
÷	Divided by	÷
=	Equals (Is)	=
.	Point	.
%	Percent	%
(((1 + 6) - 2) x 2) ÷ 2.5=4	One plus six minus two multiplied by two divided by two point five equals four or One and six take away two times two divided by two point five is four	1 + 6 - 2 x 2 ÷ 2.5=4
10% 100=10	Ten percent of one hundred equals ten.	10% 100=10


Separation between hundreds and tens Hundreds and tens are usually separated by 'and' (in American English 'and' is not necessary). 110 - one hundred and ten 1,250 - one thousand, two hundred and fifty 2,001 - two thousand and one Now look at the following figures and observe how they are said in English: A sum of money: £ 22.30 (Notice that a point is used to express sums of money, but it is not pronounced) (twenty-two pounds, thirty) An address: 24 Park Avenue : (twenty-four Park Avenue) A date: 16th February 1971 (February the sixteenth, nineteen seventy one) June 2nd, 1906 (June the second, nineteen-o-six) A speed: 205 km/h (two-hundred and five kilometres the hour) A big number: 624,112,350 (always remember to put and after any hundred) (six hundred and twenty-four million, one hundred and twelve thousand, three-hundred and fifty) One We often say "a" instead of "one". For example when we have the numbers 100 or ¹/₂ we say "A hundred" or "A half". Fractions Not all numbers are whole numbers, or just fractions (see above), they are a mixture of both. For example: 1¹/₂ - "One and a half."
Decimals When pronouncing decimals we use the word point to represent the dot. The numbers following the dot are pronounced separately. For example: When you have the number 1.36 we say "One point three six."
Squared / Cubed / To the power of Square numbers are written 2² = we say "Two squared" = 2 x 2 = Two squared equals four. Cubed numbers are written 2³ = We say "Two cubed" = 2 x 2 x 2 = Two cubed equals eight You can also say "to the power of" - "Two to the power of two equals four." and "Two to the power of three equals eight." You can then have "to the power of" any number. Two to the power of twelve = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 4096. It's much easier to write 2¹² = 4096.

Separation between hundreds and tens

Hundreds and tens are usually separated by 'and' (in American English 'and' is not necessary).

110 - one hundred and ten
1,250 - one thousand, two hundred and fifty
2,001 - two thousand and one

Now look at the following figures and observe how they are said in English:

A sum of money: £ 22.30 (Notice that a point is used to express sums of
money, but it is not pronounced) (twenty-two pounds, thirty)

An address: 24 Park Avenue : (twenty-four Park Avenue)

A date: 16th February 1971 (February the sixteenth, nineteen seventy
one)
June 2nd, 1906 (June the second, nineteen-o-six)

A speed: 205 km/h (two-hundred and five kilometres the hour)

A big number: 624,112,350 (always remember to put and after any
hundred) (six hundred and twenty-four million, one hundred and twelve
thousand, three-hundred and fifty)

One

We often say "a" instead of "one".
For example when we have the numbers 100 or ¹/₂ we say "A hundred" or "A half".

Fractions

Not all numbers are whole numbers, or just fractions (see above), they are a mixture of both.
For example:
1¹/₂ - "One and a half."

Decimals

When pronouncing decimals we use the word point to represent the dot. The numbers following the dot are pronounced separately.

For example:

When you have the number 1.36 we say "One point three six."

Squared / Cubed / To the power of

Square numbers are written 2² = we say "Two squared" = 2 x 2 = Two squared equals four.
Cubed numbers are written 2³ = We say "Two cubed" = 2 x 2 x 2 = Two cubed equals eight
You can also say "to the power of" - "Two to the power of two equals four." and "Two to the power of three equals eight."
You can then have "to the power of" any number.
Two to the power of twelve = 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 4096.
It's much easier to write 2¹² = 4096.

Interesting Numbers

~ 0 ~

In English 10, 20, 30, through to 90 are 1 ten, 2 tens, 3 tens, etc.

Also there are a number of ways you can say 0 in English.

	When we use it	For example:-
0 = oh	after a decimal point	9.02 = "Nine point oh two."
	in bus or room numbers	Rooom 101 = "Room one oh one." Bus 602 = "Bus six oh two."
	in phone numbers	9130472 = "Nine one three oh four seven two."
	in years	1906 = "Nineteen oh six."
0 = nought	before a decimal point	0.06 = "Nought point oh six."
0 = zero	in temperature	-10°C = "10 degrees below zero."
	US English for the number	0 = "Zero"
0 = nil	in football	Chelsea 2 Manchester United 0 = "Chelsea two Manchester United nil."
0 = love	in tennis	20 - 0 = "Twenty love."

~ 12 ~

The number 12 is often represented as a dozen and the number 6 as a half dozen.

For example:
12 eggs= "A dozen eggs."
6 eggs = "Half a dozen eggs."

~ 13 ~

A dozen is 12, but a baker's dozen is 13, because in the past bakers who were caught shortchanging customers could be liable to severe punishment, so they used to add an extra bread roll to make up the weight.

~ 1 billion ~

When is a billion not a billion?

In British English billion traditionally means a million million = 1,000,000,000,000 = 10¹²
In American English billion means a thousand million = 1,000,000,000 = 10⁹
The American billion has become standard in technical and financial use.
However, to avoid confusion it is better to use the terms "thousand million" for 10⁹ and "million million" for 10¹².

Milliard " is French for the number 10⁹. It is not used in American English but is sometimes, but rarely, used in British English.

Letters as Numbers

~ k ~

The letter k is often used to denote a thousand. So, 1k = 1,000.
If you see a job advertised and it offers a salary of £12k it means £12,000.00.

~ m ~

The letter m is often used to denote a million. So, 1m = 1,000,000.
If you see a job advertised and it offers a salary of £12m, apply for it!

~ bn ~

The letters bn denote a billion. So, 1bn is usually 1,000,000,000 (see above).
.

myriad

The word myriad used to mean 10,000. Nowadays it's used to refer to a countless number or multitude of specified things.
For example: Earth hosts a myriad of animals.

Here you´ve got a useful site to practise numbers.
More practice here.

Source: http://www.learnenglish.de/basics/numbers.html