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Numbers Unit One 7th Grd

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Rubén Gutierréz Echeverría

on 2 December 2016

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Transcript of Numbers Unit One 7th Grd

The Natural N' Ordinal Numbers System
Numbers For 7th grade
In mathematics, the natural numbers are those used for counting (as in "there are six coins on the table") and ordering (as in "this is the third largest city in the country"). In common language, words used for counting are "cardinal numbers" and words used for ordering are "ordinal numbers".
NATURAL NUMBERS
They are used for counting, address
and Telephone numbers
NATURAL NUMBERS
Zero-Cero
One-Uno.
Two-Dos.
Three-Tres.
Four-Cuatro.
Five-Cinco.
Six-Seis.
Seven-Siete.
Eight-Ocho.
Nine-Nueve.
Ten-Diez.
Eleven-Once.
Twelve-Doce.
Thirteen-Trece.
Fourteen-Catorce.
Fifteen-Quince.
Sixteen-Dieciséis.
Seventeen-Diecisiete.
Eighteen-Dieciocho.
Nineteen-Diecinueve.


Twenty-20
Thirty-30
Forty-40
Fifty-50
Sixty-60
Seventy-70
Eighty-80
Ninety-90
CONTRASTING
ThirtÉÉn.
FourtÉÉn
FiftÉÉn
SixtÉÉn
SeventÉÉn
EightÉÉn
NinetÉÉn
THIRTy
FORTy
FIFTy
SIXTy
SEVENTy
EIGHTy
NINETy
three red apples
two green apples
one yellow apple
examples: Counting
85 New York
Avenue
examples: Address
examples: Telephone Numbers
7896-5214
Seventy Eight, Ninety Six,
Fifty Two, Fourteen.
ORDINAL NUMBERS
They are used for ordering and dates

Examples: Ordering
The Alien was the First to be
walking on Titan
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

exercises
Let's see some examples
Apollo 11 was the first spaceflight that landed humans on the Moon
on July 20th, 1969
One small step for man, one giant leap for mankind
How old are you ?
When is your birthday?
What is your favorite number?
What is your Cellphone number?
How old are your Parents?
John Smith, 23 Acacia Avenue
61 Wellfield Road
91 Western Road Brighton
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