RBSE Class 4 Maths We Learnt and Understood-3 Solutions

Regular practice of RBSE Class 4 Maths Solutions We Learnt and Understood-3 Question Answer sharpens your problem-solving skills.

RBSE Class 4 Maths We Learnt and Understood-3 Question Answer

Question 1.
How many centimetres are there in one metre?
(i) 10 cm
(ii) 100 cm
(iii) 1000 cm
(iv) 1 cm
Solution :
(ii) 100 cm

Question 2.
How many metres are there in one kilometre?
(i) 100 metres
(ii) 10 metres
(iii) 1000 metres
(iv) None of these
Solution :
(iii) 1000 metres

Question 3.
How many kilograms are there in one quintal?
(i) 1000 kg
(ii) 50 kg
(iii) 10 kg
(iv) 100 kg
Solution :
(iv) 100 kg

Question 4.
How many millilitres are there in one litre?
(i) 10 ml
(ii) 100 ml
(iii) 1000 ml
(iv) None of these
Solution :
(iii) 1000 ml

Question 5.
Write the names of three objects of the following shapes-
(i) Cuboid shape
(ii) Conical shape
(iii) Cylinder shape
Solution :
(i) Cuboid shape-Match box, Box, Trunk, Sweet box.
(ii) Conical shape-Icecream cone, Party cap, Pinnacle, Top of loudspeaker.
(iii) Cylinder shape-Oil drum, Tea box, Cell, Roller.

Question 6.
Fill in the following table-

Solution :

Question 7.
Draw all the symmetry lines of the shapes given below-
(i)

Solution :

(ii)

Solution :

(iii)

Solution :

Question 8.
Fill in the blanks-

Solution :

(Since 2 bottles of 500 ml each can be filled from 1 litre, so 32 bottles can be filled from 16 litre)

Question 9.
Match-

Solution :

(a) 3 litres 725 ml	(iv) 3725 ml
(b) 30 litres 725 ml	(iii) 30.725 litres
(c) 8.685 litres	(ii) 8685 ml
(d) 80685 ml	(v) 80.685 litres
(e) 1.450 litres	(vi) 1 litres 450 ml
(f) 14500 ml	(i) 14.500 litres

Question 10.
Names of some shapes are given below. For each shape state whether it has mirror symmetry. If yes, then draw the figure & draw the line of symmetry.
(i) A square
(ii) A rectangle that is not a square
(iii) An equilateral triangle
(iv) A scalene triangle
(v) A circle
(vi) Letter ‘H’
Solution :
(i) A square-Yes, 4 lines of symmetry.

(ii) A rectangle that is not a square-Yes, 2 lines of symmetry.

(iii) An equilateral triangle-Yes, 3 lines of symmetry.

(iv) A scalene triangle-No, zero lines of symmetry.

(v) A circle-Yes, infinite lines of symmetry.

(vi) Letter ‘H’-Yes, 2 lines of symmetry.

Question 11.
An ant starts walking from point A and passes through the following path- 5 cm straight towards east, then 3 cm straight towards north, then 5 cm straight towards west and finally 3 cm straight towards south.
(i) What is the total distance covered by the ant?
Solution :
5+3+5+3=16 cm

(ii) How far is the ant now from the starting point A and in which direction?
Solution :
The ant again reaches the starting point A and its direction is towards south.

Question 12.
Solve the following-

(i) 4 kg = ______ grams
Solution :
4 kg = 4000 grams

(ii) 6 kg = ______ grams
Solution :
6 kg = 6000 grams

(iii) 3000 grams = ______ kilograms
Solution :
3000 grams = 3 kilograms

(iv) 4000 grams = ______ kilograms
Solution :
4000 grams = 4 kilograms

(v) 6750 grams = ______ kilograms
Solution :
6750 grams = 6.750 kilograms

Question 13.
Solve the following-
(i) Nidhi bought 2 kg potatoes, 500 grams tomatoes, 750 grams green chillies, 1 kg. 500 grams bottle gourd and 1 kg round gourd from a vegetable shop. So tell how much vegetables did Nidhi buy in total?

Solution :

Therefore, Nidhi bought in total 5 kg 750 grams Vegetables.

(ii) Sanjay bought 10 kg sugar from the shop but some sugar fell out due to the bag tearing on the way. On weighing at home, it was found that now he has 6 kg .350 grams of sugar left. So tell how much sugar is less?
Solution :

Therefore, 3 kg 650 grams of sugar is less.

(iii) Rahul bought 40 kg tomatoes and 10 kg potatoes. Out of that 3 kg 500 grams of tomatoes got rotten. So now how many tomatoes are left in total?
Solution :
Total Tomatoes = 40 kg
Tomatoes got rotten = 3 kg 500 gram
Tomatoes are left = 40 kg-3 kg 500 grams
= 36 kg 500 grams
So, 36 kg 500 grams Tomatoes are left in total.

Question 14.
Draw the lines of symmetry in those figures which are symmetrical-
(i)

Solution :

(ii)

Solution :

(iii)

Solution :

Question 15.
Complete the figures given below on the lines of symmetry-
(i)

Solution :

(ii)

Solution :