The DAV Class 6 Maths Book Solutions Pdf and **DAV Class 6 Maths Chapter 1 Worksheet 2 **Solutions of Natural Numbers and Whole Numbers offer comprehensive answers to textbook questions.

## DAV Class 6 Maths Ch 1 WS 2 Solutions

Question 1.

Complete the statements by filling in the blanks.

(а) The smallest whole number is __________

Solution:

0

(b) There is __________ largest whole number.

Solution:

no

(c) In whole numbers, __________ has no predecessor.

Solution:

0

(d) The predecessor of the smallest 5-digit number has __________ digits.

Solution:

4

(e) The successor of the greatest 5-digit number is __________.

Solution:

100000

(f) The smallest 7-digit number ending in 5 is __________.

Solution:

1000005

(g) 387 is to the __________ of 388 on the number line.

Solution:

left

(h) 4397 is to the __________ of 4396 on the number line.

Solution:

right

Question 2.

Write the successor of the following.

(a) 45638

Solution:

Successor of 45638 = 45638 + 1 = 45639

(b) 10009

Solution:

Successor of 10009 = 10009 + 1 = 10010

(c) 220209

Solution:

Successor of 220209 = 220209 + 1 = 220210

(d) 4226372

Solution:

Successor of 4226372 = 4226372 + 1 = 4226373

Question 3.

Write the predecessor of the following:

(a) 33801

Solution:

Predecessor of 33801 = 33801 – 1 = 33800

(b) 100000

Solution:

Predecessor of 100000 = 100000 – 1 = 99999

(c) 6698979

Solution:

Predecessor of 6698979 = 6698979 – 1 = 6698978

(d) 80115670

Solution:

Predecessor of 80115670 = 80115670 – 1 = 80115669.

Question 4.

Find the next three successors of 647999

Solution:

Ist successor of 647999 = 647999 + 1 = 648000

IInd successor of 647999 = 648000 + 1 = 648001

IIIrd successor of 647999 = 648001 + 1 = 648002

Question 5.

Find three immediate predecessors of 552002.

Solution:

1st predecessor of 552002 = 552002 – 1 = 552001

IInd predecessor of 552002 = 552001 – 1 = 552000

IIIrd predecessor of 552002 = 552000 – 1 = 551999

Question 6.

Compare the following numbers.

(a) 729 _____ 279

(b) 10899 _____ 10799

(c) 9785 _____ 7835

(d) 135629 _____ 136529

Solution:

(a) 729 > 279

(b) 10899 > 10799

(c) 9785 > 7835

(d) 135629 < 136529

Question 7.

Arrange the following in ascending order 43, 287, 15769, 833, 49538, 34, 798665.

Solution:

Ascending order is: 34, 43, 287, 833, 15769, 43287, 49538 and 798665.

Question 8.

Arrange the following in descending order 3951, 1024, 977, 422596, 38675, 560832, 67

Solution:

Descending order is: 560832, 422596, 38675, 3951,1024, 977, 67

Question 9.

Form the greatest 7-digit number using the digits 3, 8, 9 (digits may repeat).

Solution:

Digits are 3, 8 and 9

∴ Greatest 7-digit number is 9999983.

Question 10.

Write the smallest 6-digit number using the digits 4, 5, 0 (digits may repeat).

Solution:

Smallest 6-digit number using 4, 5, and 0 = 400005.

### DAV Class 8 Maths Chapter 1 Worksheet 2 Notes

**Whole Numbers and Their Representation on Number Line:**

Natural numbers along with zero are called whole numbers.

Example: 0, 1, 2, 3, 4, 5, 6, 7, 8 ………

Number Line:

A line sub-divided into equal parts and marked as 0, 1, 2, 3, 4 ………………

**Successor and Predecessor:**

Successor of a whole number can be obtained by adding 1 to it.

Example:

Successor of 12 is 12 + 1 = 13

Predecessor of a whole number can be obtained by subtracting 1 from it.

Example:

Predecessor of 16 is 16 – 1 = 15.

Example 1:

Rearrange the digits 98750432 to form smallest 7-digit and greatest 8-digit numbers.

Solution:

Let us write the digits in ascending order 0, 2, 3, 4, 5, 7, 8, 9

∴ Smallest 7-digit number is 02345789

and the greatest 8-digit number is 98754320