Page 31 - Math 4

Whole Numbers Whole Numbers

Section B

3. Let's copy and complete the pattern of odd numbers.

a) 141, 143, , , , 151. I investigated the rule!
The next odd number to
b) 265, , , , , 275. 143 is 143 + 2 = 145!!

c) 589, , , 595, , 599.
4. Let's copy and complete the pattern of even numbers.

a) 300, 302, , , , 310.
I also investigated!
The next even number to
b) 404, , , , , 414.
302 is 302 + 2 = 304
c) 796, , , , , 806.
It's your time - Project work!

5. a) Write the natural numbers upto 100. List the odd, even, prime, and
composite numbers separately.
3 + 5 = 8 (even)
b) Let's take any three pairs of odd numbers and 1 + 9 = 10 (even)
3 × 5 = 15 (odd)
perform addition and multiplication between
7 × 9 = 63 (odd)
each pair. Discuss about the results with your
friends and investigate the facts. 2 + 4 = 6 (even)
8 + 6 = 14 (even)
c) Let's take any three pairs of even numbers and 4 × 6 = 24 (even)
perform addition and multiplication between 8 × 2 = 16 (even)
each pair. Discuss about the results with your
friends and investigate the facts.

2 + 3 = 5 (odd)
d) Let's take any three pairs of odd and even 4 + 7 = 11 (odd)
numbers. Perform addition and multiplication 5 × 6 = 30 (even)
9 × 2 = 18 (even)
between each pair. Discuss about the results
with your friends and investigate the facts.

6. Let's draw the following number of circles in a chart paper. Colour each pair
of circles and identify odd and even numbers.

a) 7 circles b) 10 circles c) 15 circles d) 18 circles
?

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vedanta Excel in Mathematics - Book 4
Approved by Curriculum Development Centre, Sanothimi, Bhaktapur v edanta Ex c e l in Mathematics - Book 4