Page 26 - Start Up Mathematics_1
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Read and understand how to form ordinal numbers Remember
beyond 10. Number 12 is
Eleven – Eleventh (add th) an exception as
it is written as
Twenty – Twentieth (change y to ie and add th) twelfth.
Twenty-one – Twenty first (change the second
number to an ordinal number)
18 Answer the following questions.
(a) Write the position of each child in the sack race held at school.
(b) In the class exam, Akriti’s rank was 12, Pallavi’s was 21, Arushi’s was 27 and
Kinjal’s was 31. Write their ranks in ordinal numbers.
Akriti Pallavi
Arushi Kinjal
Even and Odd Numbers
The objects that are in twos form a pair.
Look at these examples.
a pair of gloves a pair of shoes a pair of socks
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