Successor and predecessor are additionally recognized as after number and before number individually.

**Predecessor:** As we understand that predecessor suggests before number. There are two ways to find before number.

**1)** Start the counting numbers and stop at the number up to which you have to reach the before number.

**Examples of Predecessor:**

Discover the before number of 8.

Say 1,2,3,4,5,6,7,8 so before 8 we said 7 so 7 is the predecessor of 8.

**2)** If you want to find the predecessor of the given number then decrease 1 from the given number.

Example :

1) Predecessor of 8 is 8 -1 = 7

2) Predecessor of 12 is 12 – 1 = 12

3) Predecessor of 21 is 21 -1 = 20

**Note:** There is no predecessor of the whole number 0.

**Successor:** There are two techniques to get the successor of the given number.

**1)** Start the counting numbers and stop at that number which is you provide. The next coming number is the successor of the given number.

**Example:** Determine the successor of 13.

Start 1,2,3,4,5,6,7,8,9,10,11,12,13 and then the next number is 14. So 14 number is the successor of 13 numbers.

**2)** For large numbers the successor is the number obtained by adding 1 to it.

**Example :**

a) The successor of 15 is 15 + 1= 16.So 16 is the successor of 15.

b) The successor of 18 is 18 + 1 = 19.

c) Successor of 8 is 8 + 1 = 9

d) Successor of 55 is 55 + 1= 56.

**Grade 1 Practice Test**

**Find before or after numbers.**

1) ____,13

2) 17,____

3) 3,____

4) 14,_____

5) ___,11

6) ____,2

7) 16,____

8) 6,_____

9) _____,8

10) _____,21