**(1)** **Write the next three natural numbers after 10999**

Next three natural numbers after 10999 are –

10999 + 1 = 11000

11000 + 1 = 11001

11001 + 1 = 11002

**Hence, next three natural numbers are 11000, 11001 and 11002 **

**(2)** **Write the three whole numbers occurring just before 10001**

Three whole numbers occurring just before 10001 are –

10001 – 1 = 10000

10000 – 1 = 9999

9999 – 1 = 9998

**Three whole numbers occurring just before 10001 are 10000, 9999 and 9998 **

**(3)** **Which is the smallest whole number?**

**Sol. **The numbers from zero to infinity form whole numbers.

** **Therefore, **smallest whole number is 0**.

**(4)** **How many whole numbers are there between 32 and 53?**

For such type of questions, subtract the two numbers and then subtract 1 from the result

** Step 1.** Subtract both the numbers

** **53** –** 32 = 21

** Step 2.** Subtract 1 from the result

** ** 21 **–** 1 = 20** **

** Therefore, total 20 whole numbers are there between 32 and 53**

**(5)** **Write the successor of**:

**a. 2440701**

Successor means addition of 1.

2440701 + 1 = 2440702**2440702 (Ans)**

**b.** **100199**

Successor means addition of 1.

100199 + 1 = 100200 **100200** **(Ans)****c. 1099999**

Successor means addition of 1.

1099999 + 1 = 1100000 **1100000** **(Ans)****d**. **2345670**

Successor means addition of 1.

2345670 + 1 = 2345671**2345671** **(Ans)**