# Skip counting by 8s

The concept of counting by 8s is used in the table of 8. You can count by fours by adding 8 to the previous number.If you start with 0 then the numbers counting by eight are 0,8,16,24,32,... and so on.

If you start with 1 then the numbers counting by eight are 1,9,17,25,33,... and so on

Note: If the starting number is odd then the numbers formed by counting by 8's are odd. If the starting number is even then the numbers formed by counting by 8's even.

## Skip counting by 8s

**Example :**Skip counting by 8's

8 : 8 + 8 = 16 ; 16 + 8 = 24 ; 24 + 8 =32 ; 32 + 8 = 40 ; 40 + 8 = 48 and so on.

So if the 1st number is 8 then after counting by 8's we will get 8, 16, 24, 32, 40, 48,...

To find the next number by counting by 8's , add 8 to the given number.

**Example 1 :**Find the next number of 12 after counting it by 8's.

**Solution :**Add 8 to 12.

12 + 8 = 20.

So next number will be 20.

**Example 2 :**Find the next number of 78 after counting it by 8's.

**Solution :**Add 8 to 78.

78 + 8 = 86.

So next number will be 86.

**Example 3 :**Find the 5 missing numbers using skip counting by 8's after 30.

**Solution :**As we have to find the missing number by 8's so add 8 to each number from 30.

1st missing number = 30 + 8 = 38

2nd missing number = 38 + 8 = 46

3rd missing number = 46 + 8 = 54

4th missing number = 54 + 8= 62

5th missing number = 62 + 8 = 70

So the numbers are 38, 46,54,62, 70.

## Practice

**Q.1 Find the missing numbers.**

1) 10,___,___,___,___,___,58

2) 21,___,___,___,___,___,69

3) 46,___,___,___,___,___,___

4) 84,___, 100 ,___,___,___,___

5) ,___,16,___,___,___,___

**Q.2 From the above table, write all the numbers starting from 20 counting by 8.**

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