Page 18 - Math 4

Number System

1.11 The greatest and the least numbers

Classwork - Exercise

1. Let's read and learn from the given examples. Then, write the
remaining numbers.

The least 1-digit number 1 The greatest 1-digit number 9
The least 2-digit number 10 The greatest 2-digit number 99

The least 3-digit number 100 The greatest 3-digit number
The least 4-digit number The greatest 4-digit number

The least 5-digit number The greatest 5-digit number
The least 6-digit number The greatest 6-digit number

The least 7-digit number The greatest 7-digit number

The least 8-digit number The greatest 8-digit number
The least 9-digit number The greatest 9-digit number

2. Let's tell and write the 'greatest' or 'least' in the blank spaces. Also
write the number of digits.

a) 999999 is the number of digits.

b) 1000000 is the number of digits.

c) 10000000 is the number of digits.

d) 999999999 is the number of digits.

1.12 The greatest and the least numbers formed by given digits

Classwork - Exercise

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

a) All possible 2-digit numbers formed by the digits 2 and 3 are
and .

b) Between 23 and 32, the greater number is and the smaller
number is

c) So, the greatest 2-digit number formed by 2 and 3 is

d) And, the least 2-digit number formed by 2 and 3 is

vedanta Excel in Mathematics - Book 4 16 Approved by Curriculum Development Centre, Sanothimi, Bhaktapur