Page 19 - Math 4

Number System

e) All possible 3-digit numbers formed by the digits 1, 0, and 4 are
, , and

f) Between 104, 140, 410, and 401, the greatest number is
and the smallest number is

g) So, the greatest 3-digit number formed by 1, 0, and 4 is

h) And, the least 3-digit number formed by 1, 0, and 4 is
Remember! 014 and 041 are not 3-digit numbers. They are 2-digit
numbers. Because 041 is 41 and 014 is 14.

2. Let's take two digits 5 and 8. Now, answer these questions.

a) Arrange them in descending and in ascending order to make 2-digit
numbers.
descending order Ascending order

b) The greatest 2-digit number formed by 5 and 8 is

c) The least 2-digit number formed by 5 and 8 is
d) Did you investigate the rule to write the greatest and the least numbers
formed by the given digits?
3. Now, let's practise to write the greatest and the least numbers formed
by these digits.

Digits Greatest Least Digits Greatest Least
numbers numbers numbers numbers

4, 7 5, 0, 1, 2
2, 8, 0 7, 3, 9, 4, 6

6, 3, 9 2, 8, 5, 0, 7

Exercise - 1.2

Section A - Classwork

1. Let's tell and circle the correct answer as quickly as possible.

a) How many ten-thousands are there in 25690?
(i) 2 (ii) 5 (iii) 25

b) How many lakhs are there in 1 crore?
(i) 10 (ii) 100 (iii) 1000
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Approved by Curriculum Development Centre, Sanothimi, Bhaktapur vedanta Excel in Mathematics - Book 4