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→Order of Numbers (Ascending and Descending)
== Ascending and Descending Order of Numbers ==
== Ascending and Descending Order of Numbers ==
[[File:Place value system - Ganesha outline 1.png|right|frameless|403x403px]]
[[File:Place value system - Ganesha outline 1.png|right|frameless|475x475px]]
We have seen that numbers have value based on the place in which they are present. Many times, we come across smallest and greatest of a given set of numbers in our activities.
We have seen that numbers have value based on the place in which they are present. Many times, we come across smallest and greatest of a given set of numbers in our activities.
For example, would you like to eat more or less of your favourite dish? Would you like to drink more or less of a cough medicine?
For example, would you like to eat more or less of your favourite dish? Would you like to drink more or less of a cough medicine?
Ganesha likes to have more modakas. Help Ganesha choose the order of plates.
Ganesha likes to have more modakas. Help Ganesha choose the order of plates and colour the picture.
[[File:Place value system - modaka 1.png|left|frameless|180x180px]]
There are 6 plates having following number of modakas.
[[File:Place_value_system_-_modaka_2.png|frameless|150x150px]] [[File:Place_value_system_-_modaka_1.png|frameless|150x150px]] [[File:Place_value_system_-_modaka_5.png|frameless|150x150px]]
[[File:Place_value_system_-_modaka_6.png|frameless|150x150px]] [[File:Place_value_system_-_modaka_4.png|frameless|150x150px]] [[File:Place_value_system_-_modaka_3.png|frameless|150x150px]]
[[File:Place value system - ascending numbers.PNG|center|frameless|380x380px]]
Ganesha says <blockquote>“hmm… give me the plates having a smaller number of modakas first”. </blockquote>So, how do you choose the order? Find a plate with the smallest number of modakas, then next smaller number and so on….
[[File:Place value system - ascending numbers 2.PNG|center|frameless|460x460px]]
<big>'''Ascending Order - numbers increasing in value from smallest to largest'''</big>
[[File:Place value system - Bhima (2).jpg|right|frameless|266x266px]]
Consider Bhima, who eats lots of food. He was also a great cook. He would say, <blockquote>“hmm… give me the plates having greatest number of modakas first”. </blockquote>Now, how do you choose serve him? You should find a plate with the greatest number of modakas first.
[[File:Place value system - descending numbers.PNG|center|frameless|450x450px]]
'''<big>Descending Order – numbers decreasing in value from largest to smallest.</big>'''
== Place-value of Three-Digit Numbers ==
== Place-value of Three-Digit Numbers ==
[[File:Child playing football.jpg|thumb|Show Harish's moves on the football field.]]
[[File:Child playing football.jpg|thumb|Show Harish's moves on the football field.]]
Harish was playing football in his school. He made the following moves with the ball in the field. Count and write the numbers in the squares where the arrow starts and ends. Count according to the spaces moved forward or backwards.
Harish was playing football in his school. He made the following moves with the ball in the field. Count and write the numbers in the squares where the arrow starts and ends. Count according to the spaces moved forward or backwards.
[[File:Number_table_-_Harish.png|center|frameless|400x400px]]
[[File:Number table - Harish.png|frameless|250x250px]]
# He moved forward by 5 boxes from ______________ to ____________
# He moved forward by 5 boxes from ______________ to ____________
# He moved forward by 10 boxes from ____________ to _____________
# He moved forward by 10 boxes from ____________ to _____________
Number Exercise – Identify the ones, and tens place of a number.
Number Exercise – Identify the ones, and tens place of a number.
[[File:Finding Place-value.PNG|frameless|400x400px]]
[[File:Finding Place-value.PNG|frameless|500x500px]]
== Activities and Exercises ==
== Activities and Exercises ==