The DAV Class 4 Maths Book Solutions and **DAV Class 4 Maths Chapter 2 Brain Teasers **Solutions of Addition and Subtraction offer comprehensive answers to textbook questions.

## DAV Class 4 Maths Ch 2 Brain Teasers Solutions

Question 1.

Tick (✓) the correct answer.

(a) When we add 100 to 9,136, the digit at ___________ place increases by 1.

(i) ones

(ii) hundreds

(iii) tens

(iv) thousands

Answer:

(ii) hundreds

(b) The greatest 2-digit number is less than the smallest 3-digit number by ___________

(i) 10

(ii) 9

(iii) 1

(iv) 0

Answer:

(iii) 1

(c) 7,000 – 5,000 – 2,000 ___________.

(i) 0

(ii) 3,000

(iii) 2,000

(iv) 1,000

Answer:

(i) 0

(d) 400 more than the successor of 399 is equal to ___________.

(i) 401

(ii) 499

(iii) 400

(iv) 800

Answer:

(iv) 800

(e) 10 + 101 + 1,001 + 10,001 is equal to

(i) 10,013

(ii) 11,113

(iii) 40,111

(iv) 11,001

Answer:

(ii) 11,113

Question 2.

Solve:

(a) 85,781 + 78,989

Answer:

(b) 48,125 + 9,999

Answer:

(c) 7,56,480 – 51,345

Answer:

(d) 80,000 – 79,899

Arrange in column then solve.

Answer:

Question 3.

Write down the largest number and the smallest number of four digits in which no digit is repeated and also add them.

Answer:

Largest number of 4-digit = 9876

Smallest number of 4-digit = 1023

Addition = 10899

Question 4.

You are given a magic square. Use the numbers form 1 to 9 only once and complete it so that every row and every column add up to 15.

Answer:

Question 5.

A student was asked to write numeral for seventy six thousand and five. He wrote 7,605. Find the difference between the correct answer and his answer.

Answer:

Correct answer = 7 6 0 0 5

Student answer = 7 6 0 5

Difference = 6 8 4 0 0

Question 6.

The difference between two numbers is 98,506 and the greater number is 1,00,009. Find the smaller number.

Answer:

Let the smaller number = x

greater number – smaller no. = Difference

1,00,009 – x = 48,506

-x = 48,506 – 1,00,009

x = 1,00,009 – 48, 506

Smaller number = 51,503

Question 7.

Fill in the blanks.

(a) 4,128 + ___________ = 4,128

Answer:

0

(b) ___________ + 82 + 71 = ___________ + 96 + 82

Answer:

96; 71

(c) If 75 + 169 + 1,001 = 1,245 then 1,00 + 75 + 169 = ___________.

Answer:

1,245

(d) 11,111 + 1,111 + 111 + 11 + 1 = ___________

Answer:

12, 345

(e) ___________ – 0 = 785

Answer:

785

(f) 4,500 – 1,500 = ___________

Answer:

3,000

(g) 18,000 – ___________ = 8,000

Answer:

10,000

(h) 7,500 + 2,500 = ___________

Answer:

10,000

Additional Questions

Question 1.

Solve the following:

(a) 6,000 + 6 + 16 =

Answer:

6,022

(b) 2,007 – 207 = 1,300 + ?

Answer:

500

(c) 21,483 – ? = 16,483

Answer:

5,000

(d) The difference between the 2760 and 5000 is ___________.

Answer:

5,000 – 2,760 = 2,240

(e) 90,000 – 2,786 = ?

Answer:

87,214

Question 2.

Add the numbers:

(i) 27,566 + 30,647

Answer:

Arrange in column.

(ii) 54,410 + 98,862

Answer:

Arrange in column.

(iii) 1,24,732 + 87,540

Answer:

Arrange in column.

Question 3.

Subtract the following:

(i) 53,400 and 37,423

Answer:

(ii) 54,625 and 38,876

Answer:

(iii) Sixty six thousand and six from ninety thousand and twenty six.

Answer:

(iv) 32,040 and 2,630

Answer:

Question 4.

What number should be subtracted from 32,055 to get 8,675?

Answer:

Number should be difference of two number so. 32055 – 8675 = 23,380

Question 5.

A number exceeds 2,48,545 by 17,605. What is that number?

Answer:

We have to add both the number.

New number = 2,66,150

Question 6.

The price of small car is ₹ 5,70,360 & that of van is ₹ 7,50,540. Which costs more and by how much?

Answer:

7 > 5 so van costs more.

Thus, van costs more than the car by ₹ 1,80,180