26 set 2021

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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  • FISK-PG 1 de setembro de 2011

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