Page 43 - ICSE Math 2

Forming Numbers

We can form numbers with the given digits by arranging them in diff erent order.

• To form the greatest number, arrange the given digits in descending order.

• To form the smallest number, arrange the given digits in ascending order.

Look at the given examples.

(a) Using the digits 3, 9 and 1, the

greatest number formed is 931 Top Tip
and the smallest number formed While forming the smallest
is 139. 3-digit number, never place 0
at the hundreds place as it will
(b) Using the digits 2, 5 and 0, the then become a 2-digit number.
greatest number formed is 520 So, place 0 at the tens place.
and the smallest number formed

is 205.

21. Form the greatest and the smallest 2-digit numbers using the digits
1 and 4.

Greatest number: Smallest number:

22. Fill in the boxes with digits 2, 6 and 0 to form the greatest and the
smallest 3-digit numbers.

Greatest number:

Smallest number:

23. Form the greatest and the smallest 3-digit numbers using the digits 7, 3
and 8.

Greatest number:

Smallest number:

Brainwork

Form the greatest 3-digit number using the digits 6, 2 and 5.

Now form three more numbers using the same digits.

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