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HomeMathCardinal Numbers and Ordinal Numbers | Cardinal Numbers

Cardinal Numbers and Ordinal Numbers | Cardinal Numbers

Cardinal numbers and ordinal numbers are defined right here with the assistance of colourful footage.

We rely the variety of objects like this:

One, two, three, 4, 5, six, seven, eight, 9, ten, eleven, …

The quantity on which our counting ends tells us the variety of objects. Suppose, we’ve got a set of balls.

Cardinal Numbers

We are able to rely these balls by labelling them as proven on the left. Our counting ends at 6.

So, there are 6 balls within the assortment.

The numbers 1,2,3,… which inform us the variety of objects or gadgets are known as cardinal numbers.

Now suppose, 5 youngsters are standing in a queue on the bus cease.

Ordinal Numbers

We are saying that:

1. James is first within the queue.

2. Olivia is second within the queue.

3. Sophia is third within the queue.

4. Daniel is fourth within the queue.

5. Nora is fifth within the queue.

The numbers resembling first, second, third, fourth, fifth which inform us the place or rank of an object in an ordered assortment, are known as ordinal numbers.

cardinal numbers and ordinal numbers

There are various steps in a staircase as proven within the above determine. The given staircase has 9 steps, i.e., 1, 2, 3, 4, 5, 6, 7, 8 and 9.

Within the means of climbing up the steps, we time period step Quantity (1) because the first step, step Quantity (2) because the second step quantity (3) because the third step, Quantity (4) because the fourth step, Quantity (5) because the fifth step, Quantity (6) as sixth step, Quantity (7) as seventh step, Quantity (8) as eighth step and Quantity (9) as ninth step. These are additionally expressed as 1ˢᵗ, 2ⁿᵈ, 3ʳᵈ, 4ᵗʰ, 5ᵗʰ, 6ᵗʰ, ………… and so on.

Numbers 1, 2, 3, 4, 5, ……, 9, and so on., are known as cardinal numbers whereas 1ˢᵗ, 2ⁿᵈ, 3ʳᵈ, 4ᵗʰ, 5ᵗʰ, 6ᵗʰ, ………… and so on., are referred to as ordinal numbers.

The cardinal numbers categorical the quantitative property of the numbers whereas the ordinal numbers categorical their order. The cardinal numbers categorical the variety of objects in a set whereas the ordinal quantity all the time expresses one object.

For instance, there are 5 college students in a row (cardinal quantity) and fifth pupil of the row (ordinal quantity).

Whereas coming down the steps the ordinal numbers are modified. The 9ᵗʰ turns into the 1ˢᵗ, the eighth turns into 2ⁿᵈ, the seventh turns into 3ʳᵈ and so forth. Thus, ordinal numbers are modified in reverse order, i.e., the final turns into the primary, the final however one turns into the second, and so on. However the cardinal numbers stay the identical.

Cardinal numbers      
displaying serial quantity        1  2  3   4  5  6  7  8  9
of steps of staircase       

Ordinal numbers      
     from                              1st  2nd  third   4th  fifth  sixth  seventh  eighth  ninth
   the entrance      

Ordinal numbers      
     from                              ninth  eighth  seventh   sixth  fifth  4th  third  2nd  1st
   the again       

Thus, the ordinal numbers point out the place of an object from the entrance or again of any given object. 

Allow us to think about that, there are seven boys in a row who’re numbered as 1, 2, 3, 4, 5, 6 and seven from one finish of the row. These numbers are known as cardinal numbers. 

For instance:

 Ordinal Numbers from 1 to 7: 1st   2nd   third   4th   fifth  sixth   seventh

 Ordinal Numbers from 7 to 1: seventh   sixth   fifth   4th   third   2nd   1st

Now if we take the place of every boy from boy quantity (1). The place of every boy is indicated by ordinal numbers. These are from left to proper as 1st,   2nd,   third,   4th,   fifth,   sixth,   seventh and from proper to left as seventh,   sixth,   fifth,   4th,   third,   2nd,   1st. 

Thus, from either side the place of every boy could also be indicated by ordinal numbers.


In figures, the ordinal numbers are indicated by counting numbers however we suffix two letters each time. The primary, second and third are proven by including the letters ‘st’, ‘nd’ and ‘rd’ respectively. All the opposite ordinal numbers are proven by including ‘th’.

The primary ten ordinal numbers are given beneath in phrases and figures:

Ordinal Numbers






















Questions and Solutions on Cardinal Numbers and Ordinal Numbers:

1. From the left, tick (✔) fifth fruit:

2. From the appropriate, cross () the third hen:

3. Take a look at the flowers organized in a row and write the place of pink flower from the left:

4. Match the proper ordinal quantity from the column-1 with the expression within the column-2:




The __________ of April is a Idiot’s Day.


J is the __________ letter of English alphabet.


July is the __________ month of the yr.


C is the __________ letter of English alphabet.


Saturday is the __________ day of the week.

5. Write the order of every letter within the phrase, MANGO:

(i) A is the __________ letter of the given phrase.

(ii) M is the __________ letter of the given phrase.

(iii) O is the __________ letter of the given phrase.

(iv) N is the __________ letter of the given phrase.

(v) G is the __________ letter of the given phrase.

6. Fill within the containers to jot down the names of those nice cricket gamers:


The 2nd letter is A.

The fifth letter is I.

The third letter is C.

The first letter is S.

The 4th letter is H.

The sixth letter is N.



The third letter is P.

The fifth letter is L.

The 2nd letter is A.

The 4th letter is I.

The first letter is Ok.


2nd Grade Math Apply

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