The DAV Class 3 Maths Solutions and **DAV Class 3 Maths Chapter 7 Brain Teasers** Solutions of Money offer comprehensive answers to textbook questions.

## DAV Class 3 Maths Ch 7 Brain Teasers Solutions

Question 1.

Tick (✓) the correct answer.

(a) Rahul has ₹ 120. He wants to buy a toy robot that costs ₹ 180. How much more money does he need?

(i) ₹ 150

(ii) ₹ 50

(iii) ₹ 60

(iv) ₹ 90

Solution:

(iii) ₹ 60

Cost of the toy robot = ₹ 180

Amount Rahul had = ₹ 120

Amount needed = ₹ 60

(b) How many 50 paise coins are there in a 10 rupee note?

(i) 25 coins

(ii) 35 coins

(iii) 30 coins

(iv) 20 coins

Solution:

(iv) 20 coins

In 1 rupee = two 50 paise coins

In 10 rupees = (2 × 10) 50 Paise coins

In 10 rupees = 20 50 Paise coins

(c) 80 rupees is equal to

(i) 800 paise

(ii) 8000 paise

(iii) 0.80 paise

(iv) 80 paise

Solution:

(ii) 8000 paise

1 rupee = 100 paise

80 rupees = 100 × 80 paise

= 8000 paise

(d) Aman had ₹ 90. He purchased a pen for ₹ 55. How much money was left with him?

(i) ₹ 50

(ii) ₹ 45

(iii) ₹ 35

(iv) ₹ 40

Solution:

(iii) ₹ 35

Aman had money = ₹ 90

Cost of pen = ₹ 55

Money left = ₹ 35

(e) Which of the following coins does not exist in Indian currency?

(i) ₹ 2

(ii) ₹ 5

(iii) ₹ 1

(iv) ₹ 3

Solution:

(iv) ₹ 3

Question 2.

Write in figures.

(a) 63 rupees 50 paise

Solution:

63 rupees 50 paise = ₹ 63.50

(b) 7 paise

Solution:

7 paise = ₹ 0.07

(c) 3 rupees 15 paise

Solution:

3 rupees 15 paise = ₹ 3.15

(d) 28 paise

Solution:

28 paise = ₹ 0.28

Question 3.

Write in words.

(a) ₹ 31.55

Solution:

Thirty one rupees and fifty five paise.

(b) ₹ 0.08

Solution:

Eight paise

(c) ₹ 5.15

Solution:

Five rupees and fifteen paise

(d) ₹ 70.07

Solution:

Seventy rupees and seven paise

Question 4.

Add ₹ 36.53, ₹ 0.08 and ₹ 15.58

Solution:

Question 5.

Subtract 45 paise from 2 rupees.

Solution:

Question 6.

From a book fair, Arun purchased 3 books costing ₹ 15.50, ₹ 26.50 and ₹ 5.50. If he pays ₹ 50, how much balance will he get back?

Solution:

Total cost of books = ₹ 47.50

Amount left = ₹ 50.00 – ₹ 47.50 = ₹ 2. 50

He will get back = ₹ 2.50

Question 7.

Peter purchased the following items from the Super Bazar.

Toilet soap = ₹ 24.00

Shaving Cream = ₹ 52.50

Toothpaste = ₹ 47.50

Hair Oil = ₹ 76.00

Cold Cream = ₹ 92.50

Prepare a cash memo amount paid by him. and find the total amount paid by him

Solution:

The total amount paid by him is ₹ 292.50.

Question 8.

Look at the following cash memo and find out the mistakes and correct them.

Solution:

Correct cash memo is the following:

Additional Questions:

Question 1.

Convert the following into paise.

(a) ₹ 68

Solution:

₹ 68 = 68 × 100 p

= 6800 p

(b) ₹ 8.50

Solution:

₹ 8.50 = (8 × 100 + 50) p

= (800 + 50) P

= 850 p

(c) ₹ 87.75

Solution:

₹ 87.75 = 8775 P

Question 2.

Convert the following into rupees.

(a) 45325 paise

Solution:

45325 P = 45325 ÷ 100

= ₹ 453.25

= 453 rupees 25 paise

(b) 3225 paise

Solution:

3225 P = 3225 ÷ 100

= ₹ 32.25

= 32 rupees 25 paise

(c) 8 paise

Solution:

8 Paise = ₹ 0.08

Question 3.

(a)

Solution:

₹ 360.85

(b)

Solution:

₹630.25

(c)

Solution:

₹ 3479.90

(d)

Solution:

₹ 108.20

Question 4.

(a)

Solution:

₹ 575.15

(b)

Solution:

₹ 4059.35

(c)

Solution:

₹ 6250.80

(d)

Solution:

₹ 111.30

Question 5.

Find the mistakes in following cash memo and correct them.

Solution:

Question 6.

Multiplication of money

(a) ₹ 101.00 × 4

Solution:

₹ 404

(b) ₹ 72.50 × 3

Solution:

₹ 217.50

(c) ₹ 15.25 × 2

Solution:

₹ 30.50

(d) ₹ 0.75 × 5

Solution:

₹ 3.75

Question 7.

Farukh bought a bag for ₹ 450 and cap for ₹ 300.25. He gave a ₹ 1000 note to the shopkeeper. How much money did the shopkeeper return?

Solution:

Cost of the bag = ₹ 450.00

Cost of cap = ₹ 300.25

Total cost = ₹ 750.25

Amount Farukh gave to shopkeeper = ₹ 1000.00

Money spent = ₹ 750.25

Money left = ₹ 249 . 75

The shopkeeper returned ₹ 249.75.