The DAV Maths Book Class 3 Solutions and **DAV Class 3 Maths Chapter 10 Brain Teasers** Solutions of Capacity offer comprehensive answers to textbook questions.

## DAV Class 3 Maths Ch 10 Brain Teasers Solutions

Question 1.

Tick (✓) the correct answer.

(a) Standard unit of length is—

(i) km

(ii) m

(iii) cm

(iv) 1

Solution:

(ii) m

(b) 10 l is equal to—

(i) 100 ml

(ii) 10 ml

(iii) 10000 ml

(iv) 1000 ml

Solution:

(iii) 10000 ml

(c) Approximate wt of an apple is—

(i) 3 kg

(ii) 2 kg

(iii) 150 g

(iv) 500 g

Solution:

(iii) 150 g

(d) 5 m can be the length of a—

(i) pen

(ii) saree

(iii) bread slice

(iv) book

Solution:

(ii) saree

(e) A ribbon is measured in—

(i) m

(ii) 1

(iii) g

(iv) kg

Solution:

(i) m

Question 2.

Write the most appropriate unit to measure the following.

(a) Length of a blackboard. _____

Solution:

metres

(b) Weight of a mobile phone. _____

Solution:

Gram

(c) Distance between the earth and the moon. _____

Solution:

Kilometre

(d) Volume of orange juice from 2 oranges. _____

Solution:

millilitres

(e) Quantity of rice needed for a family of three for a weak. _____

Solution:

kilogram

(f) Length of a sarce. _____

Solution:

Metres

(g) Weight of a iron box. _____

Solution:

kilogram

(h) Quantity of milk in a feeding bottle. _____

Solution:

litres.

Question 3.

Fill in the blanks.

(a) 7 kg = _____ g

Solution:

7000

(b) 11 m = _____ cm

Solution:

1100

(c) 5 l = _____ ml

Solution:

5000

(d) 10 kg = _____ g

Solution:

10000

(e) 9 m = _____ cm

Solution:

900

Question 4.

The length of a cloth is 1 m 12 cm more than its width. If the width is 1 m 50 cm, find the length of the cloth.

Solution:

Width is 1 m 50 cm and length is 1 m 12 cm more than width so to find length we have to add the extra quantity in width.

width = 1 m 50 cm

length is more than width = 1 m 12 cm

Length = 2 m 62 cm

2 m 62 cm is length of cloth.

Question 5.

A fruitseller purchased 19 kg 750 g apples and 25 kg 525 g mangoes. If he sells 11 kg 600 g apples and 23 kg 345 g mangoes, find the wt of fruits left to be sold.

Solution:

Quantity of apples purchased = 19 kg 750 g

Quantity of mangoes purchased = 25 kg 525 g

Total fruits purchased = 45 kg 275 g

Quantity of apples solds = 11 kg 600 g

Quantity of mangoes sold = 23 kg 345 g

Total sold = 34 kg 945 g

weight of fruits left to be sold = 45 kg 275 g – 34 kg 945 g

10 kg 330 g fruits are left to be sold.

Question 6.

Riya bought 5 kg of almonds. She gave 800 g to her maid and 1 kg 300 g to her neighbour. How much almonds are left with Riya?

Solution:

Almonds given to maid = 0 kg 800 g

Almonds given to neighbours = 1 kg 300 g

= 2 kg 100 g

Total almond purchased = 5 kg 000

Given to maid & neighbours = 2 kg 100 g

Almonds Left = 2 kg 900 g

Question 7.

Sheelu wants to prepare a cold drink for herself. She pours 200 ml of cold water, 75 ml of rose syrup and 300 ml of milk in a glass. What is the quantity of cold drink Sheelu has made?

Solution:

Cold water added = 200 ml

Rose syrup added = 75 ml

Milk added = 300 ml

575 ml of cold drink is made by Sheelu.

Question 8.

Add:

(a) 17 kg 158 g, 11 kg 342 g and 14 kg 250 g

Solution:

42 kg 750 g

(b) 7 m 35 cm, 21 m 46 cm and 3 m 15 cm

Solution:

31 m 96 cm

Question 9.

Subtract:

(a) 9 l 350 ml from 17 l 736 ml

Solution:

= 8 l 386 ml

(b) 76 m 25 cm from 100 m 75 cm

Solution:

= 24 m 50 cm

Additional Questions:

Question 1.

Add:

(i) 13 l 685 ml, 31 l 120 ml and 20 l 100 ml

Solution:

= 64 l 905 ml

(ii) 11 l 210 ml, 10 l 420 ml and 16 l 310 ml

Solution:

= 37 l 940 ml

Question 2.

(a) 61 l 475 ml from 89 l 586 ml

Solution:

= 28 l 111 ml

(b) 36 l 675 ml – 26 l 439 ml

Solution:

= 10 l 236 ml

(c) 9 l 439 ml from 12 l 178 ml

Solution:

= 2 l 739 ml

Question 3.

Which unit of measurement will you choose to express the following?

(a) wt of apple.

Solution:

kilogram

(b) Ink in a pen.

Solution:

millilitre

(c) Roohafza in glass of water/milk.

Solution:

millilitre

(d) Height of boy.

Solution:

centimetre

(e) wt of brick.

Solution:

kilogram.

Question 4.

Fill in the blanks:

(a) 80 l = _____ ml.

Solution:

80000 ml

(b) 9 l 350 ml = _____ ml.

Solution:

9350 ml

(c) 5 Litres 145 millilitres = _____ ml.

Solution:

5145 ml

(d) 3 l 200 ml = _____ ml.

Solution:

3200 ml

(e) 8 l 750 ml = _____ ml.

Solution:

8750 ml.

Question 5.

A basket contained 40 kg 650 g of fruits. Out of which 20 kg 210 g are pears and 11 kg 100 g are grapes and rest are oranges. Find the weight of oranges.

Solution:

The weight of Pears = 20 kg 210 g

The weight of grapes = 11 kg 100 g

Total wt of fruits in basket = 40 kg 650 g

wt of pears + grapes = 31 kg 310 g

wt of oranges = 9 kg 340 g.