0, 1, 2, 3, 4, 5, 6, 7, 8, 9, n, numbers...

People usually get confused when studying numbers. Something which you should know about numbers is that when we use commas (vírgulas) they use points (pontos) and vice-versa. So, in Portuguese, we write $1.000,00 (one thousand dollars), as long as, in English, we have to invert the signs: $1,000.00.

How are numbers spoken?

Numbers over 20
21 - twenty-one
22 - twenty-two
33 - thirty-three
99 - ninety-nine

Numbers over 100
101 - a / one hundred (and) one
124 - a / one hundred (and) twenty-four
200 - two hundred
235 - two hundred (and) thirty-five
999 - nine hundred (and) ninety-nine

Numbers over 1000
1001 - a / one thousand (and) one
1126 - one thousand one hundred (and) twenty-six
2000 - two thousand
2237 - two thousand, two hundred (and) thirty-two
9999 - nine thousand, nine hundred (and) ninety-nine

Ordinal numbers
20th - twentieth
21st - twenty-first
25th - twenty-fifth
90th - ninetieth
99th - ninety-ninth
100th - hundredth
102nd - hundred and second
223rd - two hundred (and) twenty-third

Dates
1624 - sixteen twenty-four (16-24)
1903 - nineteen-oh-three (19-0-3)
2011 - two thousand (and) eleven (2011)

What do numbers represent?

Numbers are often used on their own to show:
  • Price - It costs eight seventy-five ($8,75 - eight dollars seventy-five cents).
  • Time - We left at two twenty-five (2:25 - twenty minutes after 2 o'clock).
  • Age - She's forty-six (46 years old).
  • Size - This shirt is a thirty-eight (size 38).
  • Temperature - The temperature was in the mid-thirties (around 35°).
  • The score in games - He won the first set six-three (by six games to three: 6-3).
  • Something marked with the stated numbers - She played two nines and an eight (cards marked with these numbers).
  • A set or group of the stated numbers - The teacher divided us into fours (groups of four).
Units of length

1 mm = 1 millimeter (mm)
10 mm = 1 centimeter (cm)
10 cm = 1 decimeter (dm)
10 dm = 1 meter (m)
10 m = 1 decameter (dam)
10 dam = 1 hectometer (hm)
10 hm = 1 kilometer (km)
1 inch (polegada) = 2.54 cm
12 inches (polegadas) = 1 foot (pé) = 30.48 cm
3 feet (pés) = 1 yard (jarda) = 91.44 cm
1 mile (milha) = 1.609 km

Units of weight

1 mg = 1 milligram (mg)
10 mg = 1 centigram (cg)
10 cg = 1 decigram (dg)
10 dg = 1 gram (g)
10 g = 1 decagram (dag)
10 dag = 1 hectogram (hg)
10 hg = 1 kilogram (kg)
1000 kg - 1 tonne (ton)
1 ounce (onça) = 28.35 g
16 ounces (onças) = 1 pound (libra) = 453.6 g 

Units of capacity

1 ml = 1 milliliter (ml)
10 ml = 1 centiliter (cl)
10 cl = 1 deciliter (dl)
10 dl = 1 liter (l)
10 l = 1 decaliter (dal)
10 dal = 1 hectoliter (hl)
10 hl = 1 kiloliter (kl)

Arithmetic operations

Addition: +
Subtraction: -
Multiplicationx or .
Division: / or :
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Anônimo
AUTHOR
domingo, agosto 28, 2011 1:10:00 PM delete

Thanks for using the time and effort to write something so interesting.

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FISK-PG
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quarta-feira, agosto 31, 2011 9:49:00 PM delete

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