When we start counting odd and even numbers, the first number is odd number then comes the even number.
Color the correct number of objects. Ring the even numbers and cross the odd numbers:
Two objects form a pair. Thus, one object does not form any pair. If there are three objects, there is one pair and one object is left. If there are four objects, these form two pairs. If there are five objects, these form two pairs and one object is left. If there are six objects, these form three pairs. If there are seven objects, these form three pairs and one object is left. If there are eight objects, these form four pairs. If there are nine objects, these form four pairs and one object is left. If there are ten objects, these form five pairs and so on.
The numbers that make pairs are called even numbers. No remainder is left, when an even number is divided by2. For example: 2, 4, 6, 8, 10, ……… so on. When these numbers are divided by 2 they have no remainder left.
The numbers that have one left over when divided by 2 are called odd numbers. For example: 1, 3, 5, 7, 9, ……… so on. When these numbers are divided by 2 they have one left over.
Note: Ring (i.e. ⃝) to show the even numbers in the picture chart given above. Cross (i.e. X) to show the odd numbers.
Pairs
Things or objects that are in twos are also, said to be in pairs.
Read and learn:
Even Numbers
Numbers that can be put into pairs are even numbers.
If a number has its ones digit as 0, 2, 4, 6 and 8, it is an even number.
Thus, 2, 4, 6, 8, 10, 12, 14 etc. are even numbers.
Odd Numbers
Numbers that cannot be put into pairs are odd numbers.
If a number has its ones digit as 1, 3, 5, 7, or 9, it is an odd number.
Thus, 1, 3, 5, 7, 9, 11, 13, 15 etc. are odd numbers.
Questions and Answers on Even and Odd Numbers:
1. Write the even numbers up to 30.
Answer:
2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, and 30.
2. Write the odd numbers from 15 to 35.
Answer:
15, 17, 19, 21, 23, 25, 27, 29, 31, 33 and 35
3. Find the even number in each group and write it in the placeholder.
(i) |
43 67 12 17 21 |
▢ |
(ii) |
24 81 45 67 19 |
▢ |
(iii) |
93 81 49 50 7 |
▢ |
(iv) |
23 74 95 35 19 |
▢ |
Answer:
3. (i) 12
(ii) 24
(iii) 50
(iv) 74
4. Find the odd number in each group and write it in the placeholder.
(i) |
18 15 24 52 26 |
▢ |
(ii) |
48 10 86 37 19 |
▢ |
(iii) |
70 30 89 18 92 |
▢ |
(iv) |
28 74 84 36 17 |
▢ |
Answer:
3. (i) 15
(ii) 37
(iii) 89
(iv) 17
4. Discuss and write:
Which is the first odd numbers? __________
Answer:
4. 1
2nd Grade Math Practice
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