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Formation of Numbers
Two different numbers can be formed using 2 different digits. In a 2-digit number 42. The digits are 4 and 2. We can form another number 24 by using same digits.
The greater number is formed by arranging the given digits in descending order.
|
42 |
is greater than |
24 |
The smaller number is formed by arranging the given digits in ascending order.
|
24 |
is smaller than |
42 |
We form the greater number by repeating the greater digit. 4 is the greater digit in the number.
|
42 |
→ |
44 |
44 is the greater number formed.
We form the smallest number by repeating the smallest digit.
|
42 |
→ |
22 |
Note: We cannot form any number by writing zero on the extreme left.
1. Write all possible 2-digit numbers using the given digits in each set. The digits can be repeated. Color in blue the smallest number in each set. One has been done for you.
|
Digits |
Number |
|
4, 5 |
44, 45, 54, 55 |
|
2, 9 |
___________________________ |
|
8, 3 |
___________________________ |
|
9, 6 |
___________________________ |
|
9, 6 |
___________________________ |
Answer:
1.
|
Digits |
Number |
|
2, 9 |
22, 29, 92, 99 |
|
8, 3 |
33, 38, 83, 88 |
|
9, 6 |
66, 69, 96, 99 |
|
3, 2 |
22, 23, 32, 33 |
2. Write all possible 2-digit numbers using the given digits in each set. The digits can be repeated. Color in blue the greatest number in each set. One has been done for you.
|
Digits |
Number |
|
3, 7 |
33, 37, 73, 77 |
|
2, 3 |
___________________________ |
|
0, 7 |
___________________________ |
|
7, 8 |
___________________________ |
|
4, 1 |
___________________________ |
Answer:
2.
|
Digits |
Number |
|
2, 3 |
22, 23, 32, 33 |
|
0, 7 |
70, 77 |
|
7, 8 |
77, 78, 87, 88 |
|
4, 1 |
11, 14, 41, 44 |
3. Write the greatest 2-digit number, without repeating the given digits. One has been done for you.
|
Digits |
Number |
|
1, 5 |
51 |
|
8, 4 |
___________________________ |
|
5, 2 |
___________________________ |
|
3, 5 |
___________________________ |
|
4, 8 |
___________________________ |
Answer:
3.
|
Digits |
Number |
|
8, 4 |
84 |
|
5, 2 |
52 |
|
3, 5 |
53 |
|
4, 8 |
84 |
4. Write the smallest 2-digit number, without repeating the given digits. One has been done for you.
|
Digits |
Number |
|
1, 8 |
18 |
|
8, 9 |
___________________________ |
|
5, 3 |
___________________________ |
|
3, 6 |
___________________________ |
|
4, 7 |
___________________________ |
Answer:
4.
|
Digits |
Number |
|
8, 9 |
89 |
|
5, 3 |
35 |
|
3, 6 |
36 |
|
4, 7 |
47 |
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