Grade 2 Math Cardinal and Ordinal Numbers
Cardinal And Ordinal Numbers
What are Cardinal Numbers?
Cardinal Numbers are non-fractional counting numbers
that start from 1 and go on sequentially.
Example: 1,2,3,4,5……..
What are Ordinal Numbers?
Ordinal Numbers are words representing rank or position
of chronology, size, importance and so on.
Example: 1st, 2nd, 3rd…….
Cardinal and Ordinal Number List (1-20):
|
Cardinal
Numbers
|
Ordinal
Numbers
|
||
|
1
|
one
|
1st
|
first
|
|
2
|
two
|
2nd
|
second
|
|
3
|
three
|
3rd
|
third
|
|
4
|
four
|
4th
|
fourth
|
|
5
|
five
|
5th
|
fifth
|
|
6
|
six
|
6th
|
sixth
|
|
7
|
seven
|
7th
|
seventh
|
|
8
|
eight
|
8th
|
eighth
|
|
9
|
nine
|
9th
|
ninth
|
|
10
|
ten
|
10th
|
tenth
|
|
11
|
eleven
|
11th
|
eleventh
|
|
12
|
twelve
|
12th
|
twelfth
|
|
13
|
thirteen
|
13th
|
thirteenth
|
|
14
|
fourteen
|
14th
|
fourteenth
|
|
15
|
fifteen
|
15th
|
fifteenth
|
|
16
|
sixteen
|
16th
|
sixteenth
|
|
17
|
seventeen
|
17th
|
seventeenth
|
|
18
|
eighteen
|
18th
|
eighteenth
|
|
19
|
nineteen
|
19th
|
nineteenth
|
|
20
|
twenty
|
20th
|
twentieth
|
1. Arrange the
following sequence in ascending order:
7, 2, 5, 6, 1
And Find the Sum of the first and the middle number.
Solution:
ascending order: 1, 2, 5, 6, 7
And, First number = 1, Middle number = 5.
Sum of the first and the middle number:
1 + 5
= 6.
2. Write down the
ordinal position of the following object from the left.
|
🐘
|
🐄
|
🐒
|
🦆
|
🐜
|
🦆
|
Answer:
|
Object
|
Ordinal
Position
|
|
🐘
|
1st
|
|
🐄
|
2nd
|
|
🐒
|
3rd
|
|
🦆
|
4th
|
|
🐜
|
5th
|
|
🦆
|
6th
|
3. Color the fourth
square green.
⬜⬜⬜⬜⬜⬜
Answer: ⬜⬜⬜🟩⬜⬜
4. Fill in the blanks.
(a) A is the ____ letter of the alphabet.
(b) B is the _____ letter of the alphabet.
(c) Z is the _____ letter of the alphabet.
(d) January is the ┅┅┅┅┅ month of the year.
(e) February is the ┅┅┅┅┅ month of the year.
(f) July is the _____ month of the year.
(g) December is the _____ month of the year.
(h) November is the _____ month of the year.
Answer:
(a) 1st
(b) 2nd
(c) 26th
(d) 1st
(e) 2nd
(f) 7th
(g) 12th
(h) 11th
Month and its ordinal position:
|
Name
of
the Month |
Month
Ordinal
Position of the Year |
|
January
|
1st
/ First month
|
|
February
|
2nd
/ Second month
|
|
March
|
3rd
/ Third month
|
|
April
|
4th
/ Fourth month
|
|
May
|
5th
/ Fifth month
|
|
June
|
6th
/ Sixth month
|
|
July
|
7th
/ Seventh month
|
|
August
|
8th
/ Eighth month
|
|
September
|
9th
/ Ninth month
|
|
October
|
10th
/ Tenth month
|
|
November
|
11th
/ Eleventh month
|
|
December
|
12th
/ Twelfth month
|
5. Fill in the blanks.
(a) Monday is the _____ day of the week.
(b) Tuesday is the _____ day of the week.
(c) Wednesday is the ____ day of the week.
(d) Sunday is the ┅┅┅┅┅ day of the week.
(e) Thursday is the ____ day of the week.
Answer:
(a) 1st
(b) 2nd
(c) 3rd
(d) 7th
(e) 4th
# Ordinal Number of days as per the international standard ISO 8601:
