RBSE Class 5 Maths We Learnt and Understood-IV Solutions

Regular practice of Class 5 Maths RBSE Solutions We Learnt and Understood-IV Question Answer sharpens your problem-solving skills.

RBSE Class 5 Maths We Learnt and Understood-IV Question Answer

Question 1.
If the length of a rectangle is 6 cm and width is 4 cm, then what will be its perimeter in cm?
Solution:
Length of rectangle =6 cm
Width of rectangle = 4 cm
Perimeter of rectangle = 2(Length + Width)
= 2(6+4)
= 2 × 10
= 20 cm

Question 2.
The side of a square is 5 cm. What will be its perimeter and area?
Solution:
Side of square = 5 cm
Perimeter of square = 4 × side
= 4 × 5
= 20 cm
Area of square =(side)²
= (5)²
= 25 cm²

Question 3.
Kashvi used 18 cm of tape to decorate a card and still needs 6 cm of tape. Tell how much total cm tape will be required?
Solution:
Tape used to decorate card = 18 cm Tape still needed = 6 cm
Total tape needed to decorate the card = 18 + 6
= 24 cm

Question 4.
The length of a picture is 7 cm and width is 3 cm. What will be its square cm area?
Solution:
Length of picture = 7 cm
Width = 3 cm
Area of rectangular picture = Length × Width
= 7 cm × 3 cm
= 21 cm²

Question 5.
A square has 4 sides and all are equal. If each side is 6 cm , then what will be the area of the square?
Solution:
Side of square = 6 cm
Area of square = (side)²
= (6)²
= 36 cm²

Question 6.
The areas of two rectangles are equal. The area of one is 24 square cm.
Will their perimeters also be equal?
Answer yes or no and give reasons.
Solution:
Area of rectangle = 24 cm²
If the sides of the first rectangle = 6,4 cm
Perimeter = 2(6+4)
= 2 × 10
= 20 cm
If the sides of the second rectangle = 8,3 cm
Perimeter = 2(8+3)
= 2 × 11
= 22 cm
Therefore, their perimeters will not be equal.

Question 7.
If the length of a cloth is 10 cm and width 4 cm, then how many cm of thread is required to hem a lace around it?
Solution:
Length of cloth =10 cm
Width of cloth =4 cm
Thread required to put trim around the cloth
= 2(Length + Width)
= 2(10 + 4)
= 2 × 14
= 28 cm

Question 8.
The area of a square garden is 49 square meters. What will be the one side of that garden?
Solution:
Area of square garden = 49 m²
Side of the garden = √49 = 7 meters
Therefore, one side of the square garden will be 7 meters.

Question 9.
Which of the following objects is cylindrical in shape?
(a) platter
(b) glass
(c) plate
(d) paper
Solution:
(b) Glass

Question 10.
What are the three main dimensions of a cuboid?
Solution:
The three main measurements a cuboid are length, width and height. A cuboid is a three-dimensional shape.

Question 11.
How many dimensions are there in a flat paper? Which extra dimensions gets added when a box is made from it?
Solution:
A flat paper has 2 units: length and width.
When a box is made from it, the additional unit added is height.

Question 12.
Which of the following figures will not return to its original state in just one rotation?
(a) square
(b) equilateral triangle
(c) sphere
(d) pentagon
Solution:
(d) pentagon

Question 13.
If an object when rotates, returns to its initial position after three times, then how many sides are there in that shape?
Solution:
3 sides, Triangle

Question 14.
Which of the following is a 3D figure?
(a) leaf
(b) door
(c) football
(d) paper
Solution:
(c) Football

Question 15.
All four sides of a square are equal. If it is rotated, in how many times will it return to its original position?
Solution:
1 times

Question 16.
Find any two objects in your school bag that are three dimensional and write their names.
Solution:
Water bottle, Book.

Question 17.
A rat completed the race by taking two-two jumps each. If the path is 30 meters long, then how many jumps would it have taken?
Solution:
30 ÷ 2 = 15
The mouse took 15 jumps to complete the 30 meters long race by jumping 2-2.

Question 18.
What are the common multiples of 3 and 4 between 1 to 60 ? Write.
Solution:

Therefore, common multiples of 3 and 4 between 1 to 60 = 12,24,36,48

Question 19.
How many ways can be there to divide 24 laddus equally? How many groups will be formed each time? Write.
Solution:
Factors of 24 = 1,2,3,4,6,8,12,24
Therefore, there can be 8 ways to distribute 24 laddoos equally. Groups of 1, 2, 3, 4, 6, 8, 12, 24 will be formed each time.

Question 20.
What will be the smallest multiple of 15, which is also a multiple of both 5 and 3?
Solution:
The smallest multiple of 15 is 15, which is a multiple of both 5 and 3.

Question 21.
Which of the numbers given below are multiples of 2 ?
8,17,24,39,44
Solution:
Multiples of 2=8,24,44

Question 22.
A child jumps 6-6 times each.
Where will he reach in completing a distance of 60 meters? (Write the multiples of 6)
Solution:
Multiples of 6 = 6,12,18,24,30, 36, 42, 48, 54, 60

Question 23.
If a tile is 4 feet long and 1 foot wide, how many tiles will be required to completely cover a 20 square feet ground?
Solution:
Area of one tile = Length × Width
= 4 × 1
= 4 square feet
Number of tiles needed to completely cover 20 square feet of land = \(\frac{20}{4}\) = 5 tiles

Question 24.
All the factors of a number are the numbers which are exactly divisible by it. Write the factors of 18.
Solution:
Factors of 18 = 1,2,3,6,9,18

Question 25.
Write the numbers in expanded form :
(i) 12430
(ii) 50891
(iii) 37004
(iv) 64950
Solution:
(i) 12430=10000+2000+400+30
(ii) 50891=50000+800+90+1
(iii) 37004=30000+7000+4
(iv) 64950=60000+4000+900+50

Question 26.
Find out all the place values of digit 4 in numbers :
(i) 42613
(ii) 58440
(iii) 94082
(iv) 13454
(v) 74129
(vi) 40967
Solution:
(i) 40000
(ii) 400,40
(iii) 4000
(iv) 400,4
(v) 4000
(vi) 40000

Question 27.
Write the numbers in ascending order :
(i) 56321, 53261, 52316, 51326
(ii) 74120, 72410, 71402, 89503
(iii) 85930,80593,83059,89503
(iv) 91042, 90124, 90412
Solution:
Arranging the above numbers in ascending order :
(i) 51326,52316,53261,56321
(ii) 70214,71402,72410,74120
(iii) 80593,83059,85930,89503
(iv) 90124,90241,90412,91042

Question 28.
Write the numbers in descending order :
(i) 45231, 43512, 54321, 52413
(ii) 81023, 80312, 82031, 80213
(iii) 96540,95640,94650,96405
(iv) 7632, 7362, 7236, 7623
Solution:
Arranging the above numbers in descending order :
(i) 54321,52413,45231,43512
(ii) 82031,81023,80312,80213
(iii) 96540,96405,95640,94650
(iv) 7632,7623,7362,7236

Question 29.
Put the correct sign >, <, = between the numbers given below :
(i) 45210 ______ 45310
(ii) 99990 ______ 99900
(iii) 88888 ______ 88888
(iv) 87654 ______ 87645
(v) 73020 ______ 72030
(vi) 32145 ______ 32154
(vii) 14523 ______ 15423
(viii) 90001 ______ 90010
(ix) 21000 ______ 20100
Solution:
(i) 45210 < 45310
(ii) 99990 > 99900
(iii) 88888 = 88888
(iv) 87654 > 87645
(v) 73020 > 72030
(vi) 32145 < 32154
(vii) 14523 < 15423
(viii) 90001 < 90010
(ix) 21000 > 20100

Question 30.
Fill in the blank boxes :

Solution: