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Practical and Easy English - numbers

Practical and Easy English

آموزش و مشاوره زبان انگلیسی ( عمومی - تخصصی ) - نويسنده رضا متين -

Numbers

 
Many foreigners seem to have trouble using big numbers (over 10 thousand) in English. It is really quite easy once you get the hang of it. The secret is to look at the comma separators and place divisions in large numbers. Numbers below 1000 are easy.

5= five 73= seventy three 129= one hundred and twenty nine

In using large numbers, you are basically repeating this simple process, but between the comma separators you include additional words for the place divisions. These words are thousand, million, billion, trillion, and zillion.

 

Trillion

Billion

Million

Thousand

hundred

tens & ones

1,344

 

 

 

1

3


16,798

 

 

 

16

7

98

123,787

 

 

 

123

7

87

3,655,102

 

 

3

655

1

02

77,503,911

 

 

77

503

9

11

1,689,237,705

 

1

689

237

7

05

99,237,008,478,208

99

237

8

478

2

99

 

77,503,911=
seventy seven million, five hundred and three thousand, nine hundred and eleven

In this digit,
1- say the basic number before the first comma (77),
2- add the place division word (million),
3- say the basic number before the second comma (503)
4- say the place division word (thousand),
5- then say the small number (911)

Practice saying these numbers with your partner.

12,567 343,756 24,457, 800

458,903,111 123,456,789 6,840,678,236

45,693,777,043 543,867,903,040

111,222,333,444,555 56,583,694,784,223,275

In very, very large (or small) numbers scientific notation is used.

The number 15 X 104 is read as: 15 times 10 to the fourth.
The small number 22 X 10–5 is read as 22 times 10 to the negative fifth.
 

Dialogue- Numbers

Rex: Do you know the population of the earth?
Tex: Yes, it’s approximately 6,100,000,000.
Rex: Do you know the speed of light?
Tex: Yes, it’s 186,000 miles per second.
Rex: Do you know the number of neurons a human brain has?
Tex: Yes, a human brain contains 100,000,000,000 neurons.
Rex: Do you know how many miles Pluto is from the Sun?
Tex: Yes, Pluto is 5,913,520,000 miles from the sun.
Rex: Do you know how many dollar bills, stacked end on end, it would take to reach the moon?
Tex: Actually no, I know it’s a whole lot more than I have.
Rex: What is the average number of hairs on the human head?
Tex: The average number of hairs is 200,000.
Rex: Do you know how many stars are in the sky?
Tex: Not exactly, but to quote Carl Sagan “Billions and billions.”
Rex: Do you know how many atoms are in an ounce of gold?
Tex: Yes, there are 9.5 X 102 atoms in an ounce of gold.
Rex: Do you know how many seconds are in a year?
Tex: Yes, there are 3.2 X 107 seconds in a year.
Rex: Do you know how many holes it would take to fill the Albert Hall?
Tex: Uh? What are you talking about?
Rex: It’s a line from a Beatles song, ‘Now I know how many holes it would take to fill the Albert Hall. I’d love
    to turn you on. ’It’s from their song “A day in the life”.
Tex: Do you know you are strange?
Rex: Yes, I know.

 

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