Counting by 6s
Counting by 6s means adding six to previous number or jump by 6. Each number is 6 more than the previous number. if the 1st number is an odd number then the next number after adding 6 will be an odd number. And if the 1st number is an even number then the next number will be an even number.
Example: Counting by 6's
If the 1st number is 7 then next 5 numbers obtained by counting by 6's are; 7, 7 + 6 =13; 13 + 6 =19; 19 + 6 =25; 25 + 6 = 31; 31 + 6 =37
So next 5 numbers after 7 are 13,19,25,31,37.
Example 1 : Find the next 3 numbers after 22 by counting it by 6's.
Solution : 1st number = 22 + 6 = 28
2nd number = 28 + 6 = 34
3rd number = 34 + 6 = 40
So next 3 numbers after 22 are : 28,34,40.
Example 2 : Find the missing numbers. 15,21,____,____,____,____.
Solution : 1st number is 15 and next number is 21 so from this we can see that its counting by 6's
. That means after adding 6 to previous number we will get the next number. So,
1st missing number = 21 + 6 =27
2nd missing number = 27 + 6 = 33
3rd missing number = 33 + 6 = 39
4th missing number = 39 + 6 = 45
So the number are 15,21,27,33,39,45.
Example 3 : Complete the following pattern.
12,18,24,____,____,____
Solution : In 12,18 and 24 the gap of 6. That means by adding 6 we get a next number. So, 1st missing number is 24 + 6 = 30, 2nd missing number is 30 + 6 =36 and 3rd missing number is 36 + 6 = 42. Series is 12,18,24,30,36,42.
Skip counting by 6s up to 20 times
6
1 time
|
12
2 times
|
18
3 times
|
24
4 times
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30
5 times
|
36
6 times
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42
7 times
|
48
8 times
|
54
9 times
|
60
10 times
|
66
11 times
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72
12 times
|
78
13 times
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84
14 times
|
90
15 times
|
96
16 times
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102
17 times
|
108
18 times
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114
19 times
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120
20 times
|
I Complete the following counting by 6's:
1) 1,7,13,___, ____,_____,_____,_____.
2) 32,38,44,___, ____,_____,_____,_____.
3) 70,76,82,___, ____,_____,_____,_____.
4) 65,71,77,___, ____,_____,_____,_____.
Answers
1) 19,25,31,37,43
2) 50,56,62,68,74
3) 88,94,100,106,112
4) 83,89,95,101,107
2nd Grade Math
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