Numeros

Números cardinales:

Los números cardinales se usan para contar cosas. Corresponden al nombre del número exacto que queremos expresar, se refieren a la cantidad:

Ejemplos:

• There are three (3) apples on the table.
• I worked twenty (20) hours this week.
• She has one (1) car.
• He gave me fifty (50) dollars for my work.

• 1 = One
• 2 = Two
• 3 = Three
• 4 = Four
• 5 = Five
• 6 = Six
• 7 = Seven
• 8 = Eight
• 9 = Nine
• 10 = Ten
• 11 = Eleven
• 12 = Twelve
• 13 = Thirteen
• 14 = Fourteen
• 15 = Fifteen
• 16 = Sixteen
• 17 = Seventeen

• 18 = Eighteen
• 19 = Nineteen
• 20 = Twenty
• 21 = Twenty one
• 22 = Twenty two
• 23 = Twenty three
• 24 = Twenty four
• 25 = Twenty five
• 30 = Thirty
• 40 = Forty
• 50 = Fifty
• 60 = Sixty
• 70 = Seventy
• 80 = Eighty
• 90 = Ninety
• 100 = One hundred
• 1000 = One thousand

Números ordinales

Los números ordinales se usan para darle orden a situaciones, objetos o personas, generalmente cuando se están haciendo listados de cosas o cuando se estánnarrando una serie de eventos. Nos dan la idea de qué va de primero, de segundo, etc.

Ejemplos:

• First (1st): Write your name and address. Second (2nd): Write about your work experience.Third (3rd): Sign the form.
• María, first (1st). Gerardo,second (2nd). David, third (3rd).
• My baby’s first (1st) word was "car".
• My father’s second (2nd) wife is very pretty.

• 1st = First
• 2nd = Second
• 3rd = Third
• 4th = Fourth
• 5th = Fifth
• 6th = Sixth
• 7th = Seventh
• 8th = Eighth
• 9th = Ninth
• 10th = Tenth
• 11th = Eleventh
• 12th = Twelfth
• 13th = Thirteenth
• 14th = Fourteenth
• 15th = Fifteenth
• 16th = Sixteenth
• 17th = Seventeenth

• 18th = Eighteenth
• 19th = Nineteenth
• 20th = Twentieth
• 21st = Twenty first
• 22nd = Twenty second
• 23th = Twenty third
• 24th = Twenty fourth
• 25th = Twenty fifth
• 30th = Thirtieth
• 40th = Fortieth
• 50th = Fiftieth
• 60th = Sixtieth
• 70th = Seventieth
• 80th = Eightieth
• 90th = Ninetieth
• 100th = One Hundredth
• 1.000th = One Thousandth

ejercicio 1

a) one hundred and fifty-four
  
b) two thousand, five hundred and two
  
c) ten thousand,three hundred and twenty
  
d) five hundred thousand, six hundred
  
e) two million, one hundred and four thousand and one
  
f) one million, six hundred and thirty-eight thousand,five hundred and sixteen
  
g) twelve million,three hundred thousand,four hundred and two
  
h) seven hundred and eight million,two hundred and twenty-six thousand and fifty.
  
i) eleven million,seven hundred and thirty-four thousand,two hundred and sixty-one
  
j) ten million, one hundred and forty-four thousand,two hundreed and six

Ejercicio 2

a) 356   
b) 101   
c) 1,420
d) 3,043
e) 11,405    
f) 20,013   
g) 823,987    
h) 3,406,023

Ejercicio 3

 a) 452

b) 705
c) 1,505
d) 4,023
e) 15,679
f) 28,009
g) 549,648
h) 700,001
i) 2,305,127
j) 15,985,022
k) 109,897,456