natural number / even number / odd number / class 1-2-3 / Knowledge Hub

 What are natural numbers?

Ans:- counting numbers are called natural numbers.

Ex:- 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 --------------

Problem type - 1

1- Find the sum of 8 consecutive natural numbers.

2- Find the sum of 5 consecutive natural numbers.

3- Find the sum of 10 consecutive natural numbers.

4- Find the sum of 12 consecutive natural numbers.

5- Find the sum of 4 consecutive natural numbers.

What are even numbers?

Ans:- Numbers that are divisible by 2 are called even numbers.

Ex:- 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26 ---------------

       4568, 2058, 745820, 456324, 852962 ---------------------- 

Problem type -2

1- Find the sum of 7 consecutive even numbers.

2- Find the sum of 6 consecutive even numbers.

3- Find the sum of 11 consecutive even numbers.

4- Find the sum of 10 consecutive even numbers.

5- Find the sum of 14 consecutive even numbers.

What are odd numbers?

Ans:- Numbers that are not divisible by 2 are called odd numbers.

Ex:- 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27 ---------------

       4567, 2059, 745821, 456325, 852963 ---------------------- 

Problem type -3

1- Find the sum of 7 consecutive odd numbers.

2- Find the sum of 6 consecutive odd numbers.

3- Find the sum of 11 consecutive odd numbers.

4- Find the sum of 10 consecutive odd numbers.

5- Find the sum of 14 consecutive odd numbers.

 

 

cuboid / cube / volume / class 1-2-3 / knowledge Hub

 

Volume of cuboid

1- Find the volume of the cuboid whose length = 22cm,  breadth = 12 CM and height = 7 cm

2- Find the volume of the cuboid whose length = 15 m,  breadth = 6 m and height = 9 m

3- Find the volume of the cuboid whose length = 24 m,  breadth = 20m and height = 6 m

4- Find the volume of the cuboid whose length = 8 cm,  breadth = 6 cm and height = 1cm

Length of cuboid

1- Find the length of the cuboid whose volume = 1848 Cm³,  breadth = 12 CM and height = 7 cm

2- Find the length of the cuboid whose volume = 810 Cm³,  breadth = 6 CM and height = 9 cm

3- Find the length of the cuboid whose volume = 2880 Cm³,  breadth = 20 CM and height = 6 cm

4- Find the length of the cuboid whose volume = 240 Cm³,  breadth = 6 cm and height = 5 cm

Breadth of cuboid

1- Find the breadth of the cuboid whose volume = 1848 Cm³,  length = 22 CM and height = 7 cm

2- Find the breadth of the cuboid whose volume = 810 Cm³,  length = 15 CM and height = 9 cm

3- Find the breadth of the cuboid whose volume = 2880 Cm³,  length = 24 CM and height = 6 cm

4- Find the breadth of the cuboid whose volume = 240 Cm³,  length = 8 cm and height = 5 cm

Height of cuboid

1- Find the height of the cuboid whose volume = 1848 Cm³,  length = 22 CM and breadth = 12cm

2- Find the height of the cuboid whose volume = 810 Cm³,  length = 15 CM and breadth = 6 cm

3- Find the height of the cuboid whose volume = 2880 Cm³,  length = 24 CM and breadth = 20 cm

4- Find the height of the cuboid whose volume = 240 Cm³,  length = 8 cm and breadth = 6 cm

Volume of cube

 

1- Find the volume of cube each of whose edges measures 7 m

2- Find the volume of cube each of whose edges measures 12 cm

3- Find the volume of cube each of whose edges measures 8 cm

4- Find the volume of cube each of whose edges measures 9 m

5- Find the volume of cube each of whose edges measures 15 cm